Common Issues with Mazda 626 You Should Know About

By Brian Wong, Reviewed by: Kurt Niebuhr, Updated on March 29, 2024
1. Common Problems with Mazda 626
1.1. First Generation Mazda 626 (1979-1982)
1.1.1. Engine Misfires
1.1.2. Oil Leaks
1.1.3. Carburetor Issues
1.2. Second Generation Mazda 626 (1983-1987)
1.2.1. Transmission Problems
1.2.2. Electrical Issues
1.2.3. Brake System Failure
1.3. Third Generation Mazda 626 (1988-1992)
1.3.1. Engine Overheating
1.3.2. Power Steering Problems
1.3.3. Suspension Issues
2. Mazda 626 Problems by Model and Engine Type
2.1. Mazda 626 Hatchback and Sedan
2.1.1. Transmission Failure in the 1993-1997 Models
2.1.2. Engine Stalling in the 1998-2002 Models
2.1.3. Electrical Problems in the 2001-2002 Models
2.2. Mazda 626 Wagon
2.2.1. Suspension Issues in the 1993-1997 Models
2.2.2. Fuel System Problems in the 1998-2002 Models
2.2.3. Transmission Failure in the 2001-2002 Models
2.3. Mazda 626 Engines
2.3.1. F2 2.2L Engine Problems
2.3.2. KL 2.5L V6 Engine Problems
2.3.3. G4AJ 1.8L Engine Problems
3. Mazda 626 Problems by Trim Level and Complectation
3.1. Mazda 626 DX
3.1.1. Engine Hesitation and Stalling
3.1.2. Transmission Issues
3.1.3. Fuel System Problems
3.2. Mazda 626 LX
3.2.1. Electrical Problems
3.2.2. Suspension Issues
3.2.3. Brake System Failure
3.3. Mazda 626 ES
3.3.1. Engine Misfires
3.3.2. Transmission Failure
3.3.3. Fuel Pump Issues
3.4. Mazda 626 GT
3.4.1. Turbocharger Failure
3.4.2. Ignition Coil Problems
3.4.3. Overheating
4. Mazda 626 Problems by Generation
4.1. First Generation Mazda 626 (1979-1982)
4.1.1. Engine Misfires
4.1.2. Oil Leaks
4.1.3. Carburetor Issues
4.2. Second Generation Mazda 626 (1983-1987)
4.2.1. Transmission Problems
4.2.2. Electrical Issues
4.2.3. Brake System Failure
4.3. Third Generation Mazda 626 (1988-1992)
4.3.1. Engine Overheating
4.3.2. Power Steering Problems
4.3.3. Suspension Issues
4.4. Fourth Generation Mazda 626 (1993-1997)
4.4.1. Transmission Failure
4.4.2. Electrical Problems
4.4.3. Fuel System Issues
4.5. Fifth Generation Mazda 626 (1998-2002)
4.5.1. Engine Stalling
4.5.2. Transmission Issues
4.5.3. Electrical Problems
5. Common Problems by Type of Engine
5.1. Mazda 626 with the F2 Engine
5.1.1. Engine Misfires
5.1.2. Valve Cover Gasket Leaks
5.1.3. Timing Belt Issues
5.2. Mazda 626 with the FE Engine
5.2.1. Oil Leaks
5.2.2. Overheating
5.2.3. Piston Ring Failure
5.3. Mazda 626 with the FS Engine
5.3.1. Transmission Failure
5.3.2. Fuel Pump Issues
5.3.3. Engine Misfires
5.4. Mazda 626 with the KL Engine
5.4.1. Timing Chain Tensioner Failure
5.4.2. Crankshaft Position Sensor Problems
5.4.3. Cylinder Head Gasket Failure
6. Conclusion
6.1. Overall Reliability of the Mazda 626
6.2. Common Maintenance and Repair Costs
6.3. Tips for Keeping Your Mazda 626 Running Smoothly
6.4. When to Consider Selling or Trading in Your Mazda 626
FAQ: Common Issues with the Mazda 626
Example List of Mazda 626 Engine Error Codes and Descriptions

1. Common Problems with Mazda 626

1.1. First Generation Mazda 626 (1979-1982)

1.1.1. Engine Misfires

One of the common problems associated with the first generation Mazda 626 (1979-1982) is engine misfires. Engine misfires can be caused by a variety of factors, including faulty spark plugs, damaged spark plug wires, or a malfunctioning ignition coil.

When an engine misfires, it means that one or more cylinders in the engine are not firing properly. This can result in a number of symptoms, including rough idling, hesitation when accelerating, and decreased power and performance. In some cases, a misfiring engine may also trigger the check engine light to come on.

If you suspect that your Mazda 626 is experiencing engine misfires, it's important to have the problem diagnosed and repaired as soon as possible. Continuing to drive with a misfiring engine can cause further damage to the engine and lead to more expensive repairs down the line.

One potential cause of engine misfires in the Mazda 626 is a faulty ignition system. The ignition system is responsible for producing the spark that ignites the fuel in the engine's cylinders. If any component of the ignition system is damaged or malfunctioning, it can result in misfires.

Another potential cause of engine misfires in the Mazda 626 is a clogged fuel injector. The fuel injector is responsible for delivering fuel to the engine's cylinders. Over time, fuel injectors can become clogged with debris, which can restrict the flow of fuel and cause misfires.

If you're experiencing engine misfires in your Mazda 626, it's important to have the problem diagnosed by a qualified mechanic. A mechanic can perform a diagnostic test to determine the root cause of the misfires and recommend the appropriate repairs. Depending on the cause of the misfires, repairs may include replacing spark plugs or ignition coils, cleaning or replacing fuel injectors, or performing a tune-up on the engine.

1.1.2. Oil Leaks

Another common problem associated with the first generation Mazda 626 (1979-1982) is oil leaks. Oil leaks can occur for a variety of reasons, including worn or damaged gaskets, seals, or hoses.

When an oil leak occurs, it can cause a number of problems. Oil leaks can lead to a loss of oil pressure, which can cause engine damage or even engine failure. Oil leaks can also cause the engine to overheat, as oil is responsible for lubricating and cooling the engine's moving parts.

One common area for oil leaks in the Mazda 626 is around the valve cover gasket. The valve cover gasket is responsible for sealing the valve cover to the top of the engine, preventing oil from leaking out. Over time, the gasket can become worn or damaged, leading to oil leaks.

Another potential area for oil leaks in the Mazda 626 is around the oil pan gasket. The oil pan gasket is responsible for sealing the oil pan to the bottom of the engine, preventing oil from leaking out. Over time, the gasket can become worn or damaged, leading to oil leaks.

If you suspect that your Mazda 626 is experiencing oil leaks, it's important to have the problem diagnosed and repaired as soon as possible. Continuing to drive with an oil leak can cause further damage to the engine and lead to more expensive repairs down the line.

To diagnose an oil leak, a qualified mechanic will perform a visual inspection of the engine to identify the source of the leak. Depending on the source of the leak, repairs may include replacing gaskets, seals, or hoses, or even replacing the oil pan or valve cover. Regular maintenance, including oil changes and inspections, can help prevent oil leaks from occurring in the first place.

1.1.3. Carburetor Issues

Carburetor issues are another common problem associated with the first generation Mazda 626 (1979-1982). The carburetor is responsible for mixing air and fuel in the correct ratio to provide the engine with the energy it needs to run.

One common issue with the carburetor in the Mazda 626 is a buildup of debris or dirt, which can clog the carburetor and prevent it from functioning properly. This can cause the engine to run poorly, with symptoms such as rough idling, stalling, and reduced power output.

Another potential issue with the carburetor is a worn or damaged float. The float is responsible for regulating the amount of fuel that enters the carburetor, and if it becomes worn or damaged, it can cause the engine to run too rich or too lean.

In some cases, the carburetor may need to be rebuilt or replaced entirely. This is often the case if the carburetor has been damaged by debris or dirt, or if the float or other internal components have become worn or damaged over time.

If you suspect that your Mazda 626 is experiencing carburetor issues, it's important to have the problem diagnosed and repaired as soon as possible. Continuing to drive with a malfunctioning carburetor can cause further damage to the engine and lead to more expensive repairs down the line.

To diagnose a carburetor issue, a qualified mechanic will perform a visual inspection of the carburetor and other related components. Depending on the issue, repairs may include cleaning the carburetor, replacing the float or other internal components, or even replacing the entire carburetor. Regular maintenance, including cleaning and tuning the carburetor, can help prevent issues from occurring in the first place.

1.2. Second Generation Mazda 626 (1983-1987)

1.2.1. Transmission Problems

Transmission problems are a common issue associated with the second generation Mazda 626 (1983-1987). The transmission is responsible for shifting gears and transferring power from the engine to the wheels, so any issues with the transmission can cause significant problems with the vehicle's performance and drivability.

One common problem with the transmission in the Mazda 626 is slipping. This occurs when the transmission hesitates or fails to shift gears properly, resulting in a loss of power and reduced acceleration. Slipping can be caused by a number of issues, including low fluid levels, worn gears or clutch plates, or a faulty solenoid.

Another common issue with the Mazda 626's transmission is rough shifting. This occurs when the transmission shifts gears with a jolt or shudder, which can be both uncomfortable for passengers and damaging to the transmission itself. Rough shifting can be caused by a number of issues, including a low fluid level, dirty or worn transmission fluid, or a faulty solenoid.

A third common problem with the Mazda 626's transmission is grinding or whining noises. These noises can be caused by worn or damaged gears, bearings, or other internal components. If left unaddressed, these issues can cause significant damage to the transmission and lead to costly repairs.

To diagnose transmission problems, a qualified mechanic will typically perform a visual inspection of the transmission and related components, as well as test the fluid levels and quality. Depending on the issue, repairs may include replacing worn or damaged components, flushing and replacing the transmission fluid, or even replacing the entire transmission.

Regular maintenance, including fluid changes and inspections, can help prevent transmission problems from occurring in the first place. If you suspect that your Mazda 626 is experiencing transmission issues, it's important to have the problem diagnosed and repaired as soon as possible to prevent further damage and ensure safe and reliable driving.

1.2.2. Electrical Issues

Electrical issues are a common problem associated with the second generation Mazda 626 (1983-1987). The electrical system in the Mazda 626 is responsible for powering various components such as the lights, radio, and engine control module, so any issues with the electrical system can cause significant problems with the vehicle's performance and drivability.

One common issue with the Mazda 626's electrical system is a malfunctioning alternator. The alternator is responsible for charging the battery and powering the electrical components while the vehicle is running. If the alternator is not functioning properly, it can cause the battery to drain and result in various electrical issues such as dimming lights or a malfunctioning radio.

Another common electrical problem in the Mazda 626 is a faulty ignition switch. The ignition switch is responsible for sending power to the starter motor, which starts the engine. If the ignition switch is faulty, it can prevent the engine from starting or cause the engine to stall while driving.

A third common electrical issue with the Mazda 626 is a malfunctioning fuel pump. The fuel pump is responsible for pumping fuel from the gas tank to the engine, and a malfunctioning fuel pump can cause the engine to run poorly or not start at all.

To diagnose electrical problems in the Mazda 626, a qualified mechanic will typically use specialized diagnostic equipment to test the various electrical components and systems. Depending on the issue, repairs may include replacing faulty components or wiring, cleaning or repairing connectors, or even replacing the entire electrical system.

Regular maintenance, including checking the battery and alternator, can help prevent electrical issues from occurring in the first place. If you suspect that your Mazda 626 is experiencing electrical issues, it's important to have the problem diagnosed and repaired as soon as possible to prevent further damage and ensure safe and reliable driving.

1.2.3. Brake System Failure

Brake system failure is a common problem associated with the second generation Mazda 626 (1983-1987). The brake system is critical to the safe operation of the vehicle, and any issues with the system can have serious consequences.

One common issue with the Mazda 626's brake system is a malfunctioning master cylinder. The master cylinder is responsible for pressurizing the brake fluid and sending it to the brake calipers when the brake pedal is depressed. If the master cylinder is not functioning properly, it can cause a loss of braking power, which can be dangerous.

Another common brake system problem in the Mazda 626 is worn brake pads or rotors. Over time, the brake pads and rotors can become worn and need to be replaced. If the pads or rotors become too worn, it can cause the brakes to squeal, vibrate, or even fail altogether.

A third common issue with the Mazda 626's brake system is a leak in the brake lines or hoses. Brake fluid is necessary for the proper operation of the brake system, and if there is a leak in the lines or hoses, it can cause a loss of braking power.

To diagnose brake system problems in the Mazda 626, a qualified mechanic will typically inspect the system for wear and damage and use specialized diagnostic equipment to test the system's functionality. Repairs may include replacing worn brake pads or rotors, repairing or replacing the master cylinder, or repairing or replacing the brake lines or hoses.

Regular maintenance, including inspecting the brake system for wear and damage and replacing worn components, can help prevent brake system failure from occurring in the first place. If you suspect that your Mazda 626 is experiencing brake system issues, it's important to have the problem diagnosed and repaired as soon as possible to ensure safe and reliable driving.

1.3. Third Generation Mazda 626 (1988-1992)

1.3.1. Engine Overheating

The Mazda 626 of the third generation (1988-1992) experienced engine overheating as one of its common problems. Overheating can occur for a variety of reasons, including a malfunctioning cooling system, a malfunctioning thermostat, or low coolant levels.

One of the main reasons for engine overheating in the Mazda 626 was a malfunctioning cooling system. The cooling system in the Mazda 626 consists of a radiator, a water pump, hoses, and a thermostat. The radiator cools the engine coolant as it flows through the system, and the water pump circulates the coolant. If any of these components malfunction, the cooling system may not be able to regulate the engine temperature effectively, leading to overheating.

Another reason for engine overheating is a malfunctioning thermostat. The thermostat is responsible for regulating the flow of coolant through the engine. If the thermostat gets stuck closed, it can prevent coolant from flowing through the engine, leading to overheating.

Low coolant levels can also cause engine overheating in the Mazda 626. Coolant is responsible for absorbing and dissipating the heat generated by the engine, and if there is not enough coolant in the system, the engine can overheat.

To prevent engine overheating, it is important to perform regular maintenance on the cooling system, including checking the coolant level and replacing any malfunctioning components. If the engine does overheat, it is important to turn off the vehicle immediately and let it cool down before attempting any repairs.

1.3.2. Power Steering Problems

Third generation Mazda 626 (1988-1992) is known to have power steering problems, which can be frustrating for the car owners. One of the most common issues is power steering fluid leaks, which can occur due to several reasons such as damaged seals, cracked hoses, or a malfunctioning power steering pump. These leaks can result in low power steering fluid levels, leading to difficulty in steering and noisy operation of the power steering system.

Another common issue is power steering pump failure, which can be caused by several factors such as worn-out bearings, a damaged impeller, or a broken belt. This can cause difficulty in steering, noisy operation of the power steering system, and even complete loss of power steering assist.

Faulty power steering racks and pinions are also common issues in third-generation Mazda 626. This can lead to a lack of control in steering, clunking noises while turning the wheel, and uneven tire wear.

Regular maintenance of the power steering system can prevent many of these issues. It is recommended to check the power steering fluid level regularly and top it up as needed. Also, a timely replacement of damaged hoses, seals, or power steering pumps can help prevent fluid leaks and prolong the lifespan of the system. In case of any problems with the power steering system, it is important to get it inspected and repaired by a certified mechanic to avoid any safety hazards while driving.

1.3.3. Suspension Issues

The third generation Mazda 626, produced from 1988-1992, is known to have some common suspension issues. These issues can cause discomfort while driving and affect the overall handling of the vehicle. Here are some of the most common suspension issues in the Mazda 626:

1. Worn-out shocks and struts: Shocks and struts are critical components of the suspension system that absorb shocks and vibrations while driving. Over time, these parts can wear out and lose their ability to function effectively. When this happens, you may notice increased bouncing, swaying, or vibration while driving, and the handling of the car may become less stable.

2. Broken or worn-out suspension bushings: The suspension system has many rubber bushings that absorb shock and vibration. These bushings can wear out over time and can cause a clunking noise when driving over bumps or making turns. If not fixed in time, they can cause other components to wear out prematurely and even affect the alignment of the wheels.

3. Wheel alignment issues: The alignment of the wheels is critical to the handling of the vehicle. Misaligned wheels can cause uneven tire wear, poor handling, and even affect the steering. If you notice your car drifting to one side or the other while driving, or the steering wheel is not centered, it may be time to have your wheels aligned.

4. Worn-out ball joints: The ball joints are crucial components that connect the steering knuckle to the control arm. They allow the suspension system to move up and down while maintaining proper control and steering. Over time, ball joints can wear out, and if not replaced, they can cause uneven tire wear and affect the steering and handling of the vehicle.

If you are experiencing any of these suspension issues with your Mazda 626, it's essential to have them checked and repaired by a qualified mechanic. Timely repairs can help avoid further damage to the vehicle and ensure a safer and more comfortable driving experience.

2. Mazda 626 Problems by Model and Engine Type

2.1. Mazda 626 Hatchback and Sedan

2.1.1. Transmission Failure in the 1993-1997 Models

Transmission failure is a common problem with the 1993-1997 Mazda 626 models, both hatchback and sedan. The issue typically arises from the automatic transmission slipping or failing to engage properly, leading to a loss of power and difficulty accelerating. This can also result in a "jerking" sensation when shifting gears.

There are several potential causes of transmission failure in these Mazda 626 models. One common issue is a malfunctioning torque converter, which can cause the transmission to slip and lead to gear shifting problems. Additionally, worn-out transmission bands or clutches can also contribute to transmission failure, as can clogged or dirty transmission fluid.

To prevent transmission failure in the 1993-1997 Mazda 626, it is important to regularly check and change the transmission fluid according to the manufacturer's recommended intervals. In addition, if you notice any symptoms of transmission failure, such as slipping gears or difficulty accelerating, it is important to have your vehicle inspected by a qualified mechanic as soon as possible. Catching and addressing transmission issues early on can help prevent more serious damage and costly repairs down the line.

2.1.2. Engine Stalling in the 1998-2002 Models

One common problem that owners of 1998-2002 Mazda 626 models may experience is engine stalling. This issue can occur for a variety of reasons and can be frustrating for drivers.

One potential cause of engine stalling is a faulty idle air control valve. This valve is responsible for regulating the amount of air that enters the engine when the car is idling. When the valve is not functioning properly, the engine may not receive enough air and can stall. Another possible cause of engine stalling is a malfunctioning fuel pump or fuel filter. If the fuel pump is not delivering enough fuel to the engine, it may not be able to run smoothly and can stall. A clogged fuel filter can also restrict fuel flow and cause stalling.

Another potential cause of engine stalling is a malfunctioning mass airflow sensor. This sensor measures the amount of air entering the engine and sends this information to the car's computer, which then adjusts the fuel injection accordingly. If the sensor is not working properly, the engine may receive too much or too little fuel, which can cause it to stall.

Finally, electrical issues such as a faulty ignition coil or a malfunctioning crankshaft position sensor can also cause engine stalling. If the ignition coil is not functioning properly, the engine may not receive the spark it needs to ignite the fuel and air mixture. Similarly, if the crankshaft position sensor is not working correctly, the car's computer may not be able to accurately determine the position of the crankshaft, which can cause the engine to stall.

To diagnose the cause of engine stalling, it is important to take the car to a qualified mechanic who can run diagnostic tests and inspect the relevant components. Depending on the specific cause of the issue, the mechanic may need to replace the idle air control valve, fuel pump or filter, mass airflow sensor, ignition coil, or crankshaft position sensor. It is important to address engine stalling issues promptly, as continued stalling can cause damage to the engine and potentially create safety hazards while driving.

2.1.3. Electrical Problems in the 2001-2002 Models

The Mazda 626 has had its fair share of electrical problems throughout the years, particularly in the 2001-2002 models. One of the most common issues reported is with the vehicle's electrical system, particularly with the car's electrical power steering system. Drivers have reported a complete loss of power steering, which can make it difficult to control the car, particularly at higher speeds. This issue is often caused by a faulty power steering pump or an electrical short in the system.

In addition to power steering problems, drivers of the 2001-2002 Mazda 626 have also reported issues with the car's electrical system more generally. Some have experienced problems with the car's battery, which can drain quickly or fail to hold a charge. Others have reported issues with the car's electrical wiring, which can result in a wide range of symptoms, including engine stalling, difficulty starting, and warning lights on the dashboard.

Another common electrical problem reported by Mazda 626 drivers is with the car's headlights. Some drivers have reported that the headlights flicker or fail to turn on, particularly when driving at night. This issue is often caused by a faulty headlight relay, which can be easily replaced.

Overall, electrical problems can be frustrating and costly to repair, particularly in older vehicles like the Mazda 626. It's important for drivers to have these issues diagnosed and repaired by a qualified mechanic in order to ensure the safety and reliability of their vehicle.

2.2. Mazda 626 Wagon

2.2.1. Suspension Issues in the 1993-1997 Models

The Mazda 626, particularly the 1993-1997 models, has been reported to have suspension issues. One of the most common problems is the failure of the front suspension struts, which can cause a bumpy ride and poor handling. This can be due to normal wear and tear over time, as well as exposure to harsh road conditions.

Another issue reported with the suspension in these models is the failure of the ball joints, which can result in a loss of control while driving. The ball joints connect the steering knuckle to the control arms and can become loose or worn, leading to a clunking noise when driving over bumps and potentially dangerous steering issues.

Additionally, the sway bar links and bushings can become worn and cause a rattling noise when driving. The sway bar helps to stabilize the car while turning and can impact the handling of the vehicle if it is not functioning properly.

To address these issues, it is important to regularly inspect the suspension components and replace any worn or damaged parts. It is also recommended to have the alignment checked and adjusted if necessary, as improper alignment can also cause suspension issues.

Overall, while suspension issues can be a common problem with the Mazda 626, proper maintenance and attention can help to prevent or address these issues and ensure a safe and smooth driving experience.

2.2.2. Fuel System Problems in the 1998-2002 Models

The 1998-2002 models of the Mazda 626 wagon were reported to have several fuel system problems. One of the most common issues was a faulty fuel pump, which caused the engine to stall or fail to start. The fuel injectors were also reported to have problems, causing rough idling, misfires, and decreased fuel efficiency. Another common problem was a clogged fuel filter, which restricted the flow of fuel to the engine and caused performance issues.

Additionally, some owners reported leaks in the fuel lines, which posed a fire hazard and required immediate attention. The fuel tank was also reported to rust and develop holes, leading to fuel leaks and further safety concerns. These fuel system problems required repairs or replacements to be performed by a professional mechanic.

To prevent these issues, regular maintenance of the fuel system is recommended. This includes replacing the fuel filter at the manufacturer-recommended intervals and inspecting the fuel lines and tank for any signs of wear or damage. It is also important to use high-quality fuel and avoid letting the fuel level run too low, which can cause damage to the fuel pump.

2.2.3. Transmission Failure in the 2001-2002 Models

The Mazda 626 Wagon, particularly the 2001-2002 models, is known to have issues with its automatic transmission. One of the most common problems is a sudden and complete failure of the transmission, which can be caused by a variety of factors, including worn or damaged transmission gears, a malfunctioning torque converter, or a damaged valve body. Another transmission problem in these models is harsh shifting, which can be caused by a faulty solenoid or a clogged transmission filter.

Aside from transmission problems, the 1998-2002 Mazda 626 Wagon also suffers from fuel system issues. Some of the common symptoms of fuel system problems in these models include engine misfires, rough idling, and a decrease in fuel efficiency. These issues are often caused by a clogged fuel filter or a failing fuel pump, both of which can prevent fuel from reaching the engine at the correct pressure and volume.

If you own a Mazda 626 Wagon from the 2001-2002 models, it is important to be aware of these common transmission and fuel system issues. Regular maintenance and inspections can help prevent these problems from occurring, and addressing any issues promptly can prevent further damage and more costly repairs down the line.

2.3. Mazda 626 Engines

2.3.1. F2 2.2L Engine Problems

The F2 2.2L engine was a popular engine used in various Mazda 626 models from 1983 to 1991. While generally reliable, there are a few common problems that have been reported by owners of these vehicles.

One of the most common issues with the F2 engine is oil leaks. This can be caused by a variety of factors, such as worn gaskets or seals, damaged valve cover or oil pan, or a cracked cylinder head. Oil leaks can not only create a mess but can also cause damage to other engine components if left unaddressed.

Another issue that has been reported with the F2 engine is a rough idle. This can be caused by a number of factors, such as a faulty fuel injector, a dirty air filter, or a malfunctioning EGR valve. A rough idle can be a sign of other engine problems, so it is important to have it inspected by a qualified mechanic.

Some owners have also reported issues with the timing belt on the F2 engine. Over time, the timing belt can become worn or damaged, which can cause serious engine damage if it breaks. It is important to have the timing belt inspected and replaced according to the manufacturer's recommended maintenance schedule.

Finally, some owners have reported issues with the F2 engine's ignition system, such as a failing distributor or ignition coil. This can cause the engine to misfire or stall, which can be dangerous if it happens while driving. Regular maintenance and inspections of the ignition system can help prevent these issues.

Overall, the F2 2.2L engine is generally considered to be a reliable and long-lasting engine. However, as with any engine, it is important to perform regular maintenance and address any issues promptly to prevent more serious problems from occurring.

2.3.2. KL 2.5L V6 Engine Problems

The Mazda 626 equipped with the KL 2.5L V6 engine had its fair share of problems. One common issue was with the valve cover gaskets, which tended to leak oil onto the engine and cause a burning smell. This issue could be identified by checking the engine oil level and inspecting the valve covers for signs of oil leakage.

Another problem with the KL 2.5L V6 engine was a tendency for the ignition coils to fail, resulting in misfires and rough idling. This issue could be diagnosed by using a diagnostic scanner to check for misfire codes, and by inspecting the ignition coils for signs of wear or damage.

The KL 2.5L V6 engine was also known to experience issues with the PCV valve, which could become clogged or stuck open, resulting in poor engine performance and increased emissions. This issue could be identified by inspecting the PCV valve and associated hoses for signs of wear or damage.

Finally, some owners reported issues with the timing belt tensioner, which could fail and cause the timing belt to slip or break, resulting in serious engine damage. This issue could be prevented by following the recommended timing belt replacement intervals and by inspecting the tensioner and belt for signs of wear or damage.

2.3.3. G4AJ 1.8L Engine Problems

The G4AJ engine was offered in the first-generation Mazda 626 model produced from 1979 to 1982. This engine had a displacement of 1.8 liters and was a four-cylinder engine. Like any engine, the G4AJ engine has some common issues that owners should be aware of.

One of the most common problems with the G4AJ engine is oil leaks. These leaks can come from a variety of sources, including the valve cover gasket, oil pan gasket, and front and rear main seals. It's important to address oil leaks promptly to prevent damage to the engine.

Another issue with the G4AJ engine is timing belt failure. The timing belt is a critical component of the engine that keeps the camshaft and crankshaft in sync. If the timing belt fails, the engine can suffer serious damage. It's important to replace the timing belt at the manufacturer's recommended interval to prevent failure.

The G4AJ engine is also known for having problems with its carburetor. The carburetor can become clogged or fail to operate properly, resulting in poor engine performance or stalling. Regular maintenance of the carburetor can help prevent these issues.

Finally, the G4AJ engine can experience overheating problems. This can be caused by a variety of factors, including a malfunctioning thermostat, a clogged radiator, or a malfunctioning water pump. Regular maintenance of the cooling system can help prevent overheating issues.

Overall, while the G4AJ engine has some common issues, regular maintenance and prompt attention to any issues can help keep the engine running smoothly.

3. Mazda 626 Problems by Trim Level and Complectation

3.1. Mazda 626 DX

3.1.1. Engine Hesitation and Stalling

Mazda 626 DX is one of the trim levels of the Mazda 626 model. This particular model has been reported to have engine hesitation and stalling problems. The engine may hesitate or stall while accelerating or while idling. This issue can be caused by a variety of factors, including a malfunctioning throttle position sensor, dirty fuel injectors, a clogged air filter, or a failing fuel pump.

One possible cause of engine hesitation and stalling in the Mazda 626 DX is a malfunctioning throttle position sensor. This sensor helps the engine control unit (ECU) to determine the appropriate amount of fuel to inject into the engine. If the sensor is not functioning correctly, the ECU may not receive accurate information and may not inject the correct amount of fuel into the engine, causing hesitation or stalling.

Dirty fuel injectors can also cause engine hesitation and stalling. Over time, fuel injectors can become clogged with debris, reducing their ability to deliver fuel to the engine. This can cause the engine to run lean, leading to hesitation or stalling.

A clogged air filter can also lead to engine hesitation and stalling in the Mazda 626 DX. A dirty air filter can restrict the flow of air into the engine, reducing its performance and causing it to stall.

Finally, a failing fuel pump can also cause engine hesitation and stalling in the Mazda 626 DX. The fuel pump is responsible for delivering fuel from the gas tank to the engine, and if it is not functioning correctly, the engine may not receive the proper amount of fuel, causing it to stall or hesitate.

If you are experiencing engine hesitation or stalling in your Mazda 626 DX, it is important to have it diagnosed and repaired by a qualified mechanic. Ignoring this issue can lead to further damage to the engine or other components of the vehicle.

3.1.2. Transmission Issues

The Mazda 626 DX has experienced some transmission issues that owners should be aware of. One of the most common problems reported by owners is slipping transmission. This can happen when shifting gears, causing the engine to rev up without the car accelerating. Some owners also report the transmission jerking or making clunking noises when shifting gears.

Another issue that has been reported is difficulty shifting gears. This can happen when trying to shift from park to drive or when changing gears while driving. In some cases, the shifter may get stuck in one gear and not shift at all.

These transmission problems can be caused by a variety of factors, including worn out or damaged transmission components, low transmission fluid levels, or a faulty transmission control module. It's important to have these issues diagnosed and repaired promptly to prevent further damage to the transmission.

Regular maintenance, such as changing the transmission fluid and filter, can help prevent these issues from occurring. It's also important to follow the manufacturer's recommended maintenance schedule and to have any issues addressed as soon as they arise to prevent more costly repairs in the future.

3.1.3. Fuel System Problems

The Mazda 626 DX has been known to experience issues with its fuel system. One of the most common problems reported by owners is a faulty fuel pump. Symptoms of a failing fuel pump include difficulty starting the engine, engine stalling, and decreased fuel efficiency. Another potential issue is clogged fuel injectors, which can cause rough idling, decreased performance, and decreased fuel efficiency. In addition, a faulty fuel pressure regulator can cause fuel to be delivered at the wrong pressure, leading to similar symptoms as a failing fuel pump. It's important to address these issues promptly, as they can lead to more serious engine problems if left unresolved. Regular maintenance, including fuel filter replacement and fuel system cleaning, can help prevent these problems from occurring.

3.2. Mazda 626 LX

3.2.1. Electrical Problems

The Mazda 626 LX is a mid-range trim level for the Mazda 626 sedan. Like many vehicles, it may experience various electrical problems over time. One common issue with the Mazda 626 LX is with the power windows. Some owners have reported that the windows will not roll up or down, or that they may be slow to respond. This can be caused by a faulty window motor, which may need to be replaced.

Another common electrical problem with the Mazda 626 LX is with the car's dashboard gauges and warning lights. Some drivers have reported that their gauges will not register correctly, or that their warning lights will not turn on when there is an issue with the car. This may be caused by a faulty instrument cluster or a wiring issue, which will need to be diagnosed and repaired by a professional mechanic.

Additionally, the Mazda 626 LX may experience issues with its battery and alternator. Some drivers have reported that the car's battery may die unexpectedly, or that the car may have trouble starting. This could be caused by a faulty alternator, which is responsible for charging the battery while the car is running. If the alternator is not working properly, the battery may not have enough power to start the car or run the electrical components.

Overall, electrical problems can be frustrating and potentially dangerous if not addressed promptly. If you experience any issues with your Mazda 626 LX's electrical components, it is important to have them diagnosed and repaired by a qualified mechanic to ensure the safety and reliability of your vehicle.

3.2.2. Suspension Issues

Mazda 626 LX owners have reported a variety of suspension issues with their vehicles. One of the most common complaints is a clunking noise coming from the front suspension when going over bumps or turning. This can be caused by worn out or damaged suspension components such as ball joints, control arms, or sway bar links.

Another issue reported by Mazda 626 LX owners is a loose or shaky steering wheel, which can be caused by a worn out steering rack or tie rods. A vibrating steering wheel at high speeds can also be caused by imbalanced or worn out tires.

Some owners have reported issues with the rear suspension as well, such as a sagging rear end or uneven tire wear. This can be caused by worn out rear shocks or broken rear springs.

Overall, if you own a Mazda 626 LX and are experiencing suspension issues, it is important to have your vehicle inspected by a qualified mechanic to diagnose and repair the problem before it becomes a safety hazard on the road.

3.2.3. Brake System Failure

The Mazda 626 LX model has been known to experience issues with its brake system, particularly in the 2000-2002 models. Drivers have reported problems with the brakes failing to engage or feeling soft, which can be dangerous and increase the risk of accidents. In some cases, the brake warning light may also come on, indicating a potential issue with the system.

One possible cause of brake failure in the Mazda 626 LX is a leak in the brake lines or master cylinder. Over time, the rubber seals in these components can deteriorate, leading to fluid leaks that affect the system's performance. Another potential issue is a malfunctioning brake booster, which can reduce the amount of vacuum pressure available to assist with brake operation.

It's important for Mazda 626 LX owners to be aware of these potential brake system issues and have them addressed promptly by a qualified mechanic. Regular maintenance and inspections can also help prevent brake problems from developing, such as replacing worn brake pads and rotors, checking brake fluid levels and quality, and ensuring proper brake system operation.

3.3. Mazda 626 ES

3.3.1. Engine Misfires

The Mazda 626 ES, known for its luxury features and sporty design, has been known to experience engine misfires. This issue typically occurs in the 1998-2002 models and can be caused by a variety of factors, including faulty spark plugs, damaged ignition coils, or clogged fuel injectors. Engine misfires can cause a range of problems, including poor performance, reduced fuel efficiency, and potential damage to the engine over time.

In some cases, the misfire may be intermittent, making it difficult to diagnose. However, there are some common symptoms that can help identify the problem. These include a rough idle, hesitation or jerking during acceleration, and a loss of power or acceleration. Drivers may also notice a decrease in fuel efficiency, increased emissions, or the check engine light may come on.

If you suspect your Mazda 626 ES is experiencing engine misfires, it is important to have it diagnosed and repaired by a qualified mechanic. Ignoring the problem can lead to more severe damage to the engine over time. Depending on the underlying cause of the misfire, repairs may include replacing spark plugs, ignition coils, fuel injectors, or other components of the engine's ignition system. In some cases, a complete engine overhaul may be necessary to resolve the issue.

3.3.2. Transmission Failure

The Mazda 626 ES, like other models of the Mazda 626, has had issues with transmission failure. The automatic transmissions in these vehicles may experience problems such as slipping, delayed shifting, or complete failure. The cause of these issues can vary, but some common factors include low transmission fluid levels, worn clutch plates, and faulty shift solenoids.

In some cases, the transmission failure may require a complete transmission rebuild or replacement, which can be costly for the owner. To prevent or minimize the risk of transmission failure, it is recommended to have regular transmission fluid changes and inspections to ensure that the transmission is operating properly.

Additionally, some owners have reported issues with the manual transmissions in the Mazda 626 ES, including difficulty shifting or a grinding noise when shifting gears. These issues may be caused by worn synchros or a faulty clutch, and may also require repair or replacement.

Overall, if you are experiencing any issues with the transmission in your Mazda 626 ES, it is recommended to have it inspected by a qualified mechanic to determine the cause and necessary repairs.

3.3.3. Fuel Pump Issues

The Mazda 626 ES, a higher-end trim level of the 626, has been reported to experience fuel pump issues. Symptoms of fuel pump problems include engine stalling, difficulty starting the car, and a loss of power while driving. In some cases, the car may also experience erratic fuel gauge readings. The cause of these issues can often be traced back to a faulty fuel pump or a clogged fuel filter.

To address these issues, it may be necessary to replace the fuel pump or fuel filter. It is important to have these repairs done by a qualified mechanic to ensure proper installation and prevent further damage to the fuel system. Regular maintenance such as fuel system cleanings and filter replacements can also help prevent fuel pump issues from occurring in the first place.

In some cases, fuel pump problems may be covered under warranty, depending on the age and mileage of the vehicle. If you suspect that your Mazda 626 ES is experiencing fuel pump issues, it is important to have it inspected and diagnosed by a qualified mechanic to determine the best course of action.

3.4. Mazda 626 GT

3.4.1. Turbocharger Failure

The Mazda 626 GT is equipped with a turbocharged engine, which can provide significant power and performance improvements. However, this added boost can also lead to issues with the turbocharger system. One of the most common problems reported by owners of the Mazda 626 GT is turbocharger failure.

Turbocharger failure can be caused by a variety of factors, including excessive wear and tear, inadequate lubrication, and damage to the turbocharger components. Symptoms of turbocharger failure can include a loss of power, increased smoke from the exhaust, and a loud whining or grinding noise coming from the engine.

One of the main causes of turbocharger failure in the Mazda 626 GT is the use of low-quality or contaminated oil. When the oil is not changed regularly, it can become contaminated with debris, dirt, and other particles that can clog the turbocharger system and cause it to malfunction. In addition, the use of the wrong type of oil or insufficient lubrication can also lead to premature wear and tear on the turbocharger components.

Another common cause of turbocharger failure in the Mazda 626 GT is the presence of leaks in the turbocharger system. These leaks can be caused by damaged or worn seals, cracked or warped turbocharger housings, or loose connections between the turbocharger and other engine components. When these leaks occur, they can allow oil and air to escape from the turbocharger system, leading to a loss of power and increased exhaust emissions.

To prevent turbocharger failure in the Mazda 626 GT, it is important to follow the manufacturer's recommended maintenance schedule, which includes regular oil changes and inspections of the turbocharger system. In addition, it is important to use high-quality oil and other fluids that meet the specifications of the Mazda 626 GT, and to address any leaks or other issues with the turbocharger system as soon as they are detected. By taking these steps, owners of the Mazda 626 GT can help to ensure that their vehicle remains reliable and performs at its best.

3.4.2. Ignition Coil Problems

One common problem that Mazda 626 GT owners face is issues with the ignition coils. Ignition coils are a critical component of the engine's ignition system that generates the spark needed to ignite the fuel and air mixture in the engine's cylinders. When an ignition coil begins to fail, it can cause a range of problems, including rough idling, engine misfires, and a loss of power.

Over time, the ignition coils in the Mazda 626 GT can become worn out and fail. One common sign of a failing ignition coil is an illuminated check engine light. The vehicle's onboard diagnostic system (OBD) will typically detect a fault in the ignition coil circuit and trigger the check engine light.

If the ignition coil problem is not addressed promptly, it can lead to more severe engine damage. The engine may begin to misfire, which can cause damage to the spark plugs, cylinders, and even the catalytic converter. Additionally, the vehicle's fuel economy and performance can be affected.

Replacing the faulty ignition coil is the most common fix for this issue. However, it is recommended to replace all ignition coils at the same time to ensure they have the same lifespan and prevent the need for future repairs. Regular maintenance, such as replacing spark plugs and checking the ignition system for wear and tear, can help prevent ignition coil failure in the Mazda 626 GT.

3.4.3. Overheating

The Mazda 626 GT is known for its sleek design and powerful performance. However, some owners have reported issues with overheating. One common cause of overheating is a malfunctioning cooling system. This can be caused by a variety of issues, such as a leaking radiator, a malfunctioning thermostat, or a broken water pump. If the cooling system is not functioning properly, it can cause the engine to overheat, which can result in serious damage to the engine if not addressed.

Another potential cause of overheating in the Mazda 626 GT is a faulty radiator fan. The fan is responsible for drawing cool air through the radiator to cool the engine. If the fan is not functioning properly, it can cause the engine to overheat. This can be due to a faulty fan motor, a damaged fan blade, or a malfunctioning fan relay.

Overheating can also be caused by a blown head gasket. The head gasket is a vital component that seals the engine block and the cylinder head. If the head gasket fails, it can cause coolant to leak into the engine, which can result in overheating. Symptoms of a blown head gasket include white smoke coming from the exhaust, a sweet smell from the engine bay, and a loss of coolant without any visible leaks.

In addition to these issues, other factors can contribute to overheating in the Mazda 626 GT, such as a clogged radiator or a malfunctioning water pump. It is important to address any overheating issues promptly to prevent serious damage to the engine. If you notice your Mazda 626 GT is overheating, it is recommended to have it inspected by a qualified mechanic to diagnose and address the underlying issue.

4. Mazda 626 Problems by Generation

4.1. First Generation Mazda 626 (1979-1982)

4.1.1. Engine Misfires

The first generation Mazda 626, produced from 1979 to 1982, was known to have engine misfire issues. The most common cause of engine misfires in these vehicles was a faulty distributor cap and rotor. Over time, the distributor cap and rotor would wear out and cause a weak spark or no spark at all, resulting in misfires and engine performance issues.

Another common cause of engine misfires in first-generation Mazda 626 models was a clogged fuel filter. A clogged fuel filter can restrict fuel flow to the engine, causing misfires and a decrease in engine power. In some cases, a clogged fuel filter could also cause the engine to stall or not start at all.

Old or worn spark plugs could also lead to engine misfires in these vehicles. Spark plugs should be replaced at regular intervals to ensure proper engine performance. Additionally, a malfunctioning ignition system, such as a faulty ignition coil or control module, could also cause engine misfires in first-generation Mazda 626 models.

Lastly, low compression in one or more cylinders could result in engine misfires. This could be caused by a variety of issues, such as worn piston rings, damaged cylinder walls, or a warped cylinder head. Low compression can lead to a decrease in engine power and poor fuel economy. Regular maintenance and inspections can help detect these issues early on and prevent engine misfires.

4.1.2. Oil Leaks

First-generation Mazda 626s produced from 1979 to 1982 are known to experience oil leaks. The most common cause of oil leaks in these vehicles is worn valve cover gaskets. Over time, the gasket material can dry out, crack, and shrink, leading to oil leaks around the valve cover. Another common cause of oil leaks is a worn oil pan gasket. The oil pan is located at the bottom of the engine, and the gasket that seals it can become damaged or worn, leading to oil leaks.

Additionally, faulty oil seals can cause oil leaks. The crankshaft and camshaft seals can become damaged over time and cause oil to leak out of the engine. In some cases, worn piston rings can also cause oil leaks. The piston rings are responsible for sealing the combustion chamber and preventing oil from entering the cylinders. When the rings wear out, oil can leak past them and into the combustion chamber, leading to excessive oil consumption and emissions.

It is important to address oil leaks in your first-generation Mazda 626 promptly, as prolonged leaking can lead to low oil levels, reduced engine performance, and potential engine damage. Regularly checking the oil level and having the vehicle inspected by a qualified mechanic can help identify and address any oil leaks before they become more serious problems.

4.1.3. Carburetor Issues

The first-generation Mazda 626, which was produced from 1979 to 1982, was a popular car at the time but had its fair share of issues. One common problem that owners faced was carburetor issues. The carburetor is responsible for mixing fuel and air to create the mixture that is burned in the engine, and any problems with it can lead to poor engine performance and reduced fuel efficiency.

Some of the most common carburetor issues reported by first-generation Mazda 626 owners included clogged jets, improper adjustments, and vacuum leaks. Clogged jets can cause fuel to flow improperly, leading to poor acceleration and reduced power. Improper adjustments can also affect the fuel/air mixture, causing rough idling or stalling. Vacuum leaks can cause air to enter the engine without going through the carburetor, which can result in engine hesitation or misfiring.

To prevent carburetor issues, regular maintenance is key. Keeping the carburetor clean and adjusting it properly can go a long way in preventing issues from occurring. Additionally, avoiding bad fuel or contaminants can help prolong the life of the carburetor. If carburetor problems do occur, it is important to have them addressed as soon as possible to prevent further damage to the engine.

4.2. Second Generation Mazda 626 (1983-1987)

4.2.1. Transmission Problems

The second generation Mazda 626, which was produced from 1983 to 1987, had several known transmission problems. One common issue was a failure of the automatic transmission's vacuum modulator, which can cause harsh shifting or a delay in shifting. This can result in the transmission slipping or not engaging properly, leading to potential safety issues on the road.

Another common problem with the second generation Mazda 626 transmission was worn-out synchro rings. This issue can cause grinding or difficulty shifting gears, particularly in older models or those with higher mileage. It may also lead to premature wear of other transmission components, which can be costly to repair.

In addition to these issues, some Mazda 626 owners have reported problems with the transmission slipping out of gear or failing to shift properly. This can be caused by a number of factors, such as worn or damaged clutch plates or worn-out transmission bands. In some cases, a simple adjustment or replacement of these components may resolve the issue. However, in more severe cases, a complete transmission rebuild or replacement may be necessary.

Overall, while the second generation Mazda 626 is a reliable car, transmission problems can arise, particularly in older or higher mileage vehicles. Regular maintenance and prompt repairs can help prevent these issues and keep your Mazda 626 running smoothly.

4.2.2. Electrical Issues

Second Generation Mazda 626 (1983-1987) experienced a number of electrical issues. One common problem was with the alternator. Many owners reported that the alternator failed prematurely, which caused the battery to drain and the car to stall. Another issue was with the ignition system. The distributor, ignition coil, and spark plugs were all known to fail, which caused misfires and poor engine performance.

Owners also reported problems with the power windows and door locks. The power window motors were prone to failure, which meant that the windows would not open or close properly. The door locks also had a tendency to malfunction, which made it difficult to lock or unlock the doors.

Finally, the dashboard electrical components were also a source of problems. Many owners reported that the dashboard lights would flicker or go out completely, which made it difficult to see important information such as speed and fuel level. In some cases, the entire dashboard would fail and need to be replaced.

Overall, electrical issues were a common problem for Second Generation Mazda 626 owners. These problems could be frustrating and costly to repair, but proper maintenance and timely repairs could help prevent them from occurring.

4.2.3. Brake System Failure

The second generation Mazda 626 (1983-1987) is known for its brake system issues. One common problem is the brake master cylinder failure. Symptoms include a soft or spongy brake pedal, a brake pedal that goes to the floor, or brakes that fail to engage properly. Another common problem is the brake booster failure. Symptoms include a hard brake pedal, a brake pedal that is difficult to press, or brakes that fail to engage even when pressed hard.

In addition to the master cylinder and brake booster, the second generation Mazda 626 is also known to have issues with its brake calipers, brake pads, and brake rotors. Brake calipers can become stuck, causing uneven brake pad wear and reduced braking performance. Brake pads can wear out quickly, especially if the calipers are not functioning properly. And brake rotors can become warped or damaged, causing a pulsation or vibration when braking.

If you are experiencing any of these brake system issues with your second generation Mazda 626, it is important to have the problem diagnosed and repaired as soon as possible to ensure your safety while driving.

4.3. Third Generation Mazda 626 (1988-1992)

4.3.1. Engine Overheating

Third-generation Mazda 626 models, which were produced from 1988 to 1992, were known to have engine overheating issues. The overheating was often caused by problems with the engine cooling system, such as a malfunctioning thermostat or a damaged radiator. When the engine overheats, it can lead to serious engine damage and even engine failure if not addressed promptly.

Another common cause of engine overheating in the third-generation Mazda 626 is a faulty water pump. The water pump is responsible for circulating coolant through the engine block and radiator, so if it fails, the engine can quickly overheat. Additionally, a clogged or leaking radiator can also contribute to engine overheating.

In some cases, the engine overheating issue in the third-generation Mazda 626 was caused by a blown head gasket. A blown head gasket can lead to engine coolant leaking into the engine's combustion chamber, causing the engine to overheat and potentially leading to further engine damage.

It's essential to address any engine overheating issues promptly to prevent further damage to the engine. Regular maintenance, such as flushing and replacing the coolant and replacing any worn or damaged cooling system components, can help prevent engine overheating issues in the third-generation Mazda 626.

4.3.2. Power Steering Problems

The third generation of the Mazda 626 (1988-1992) is known to have power steering problems. One common issue is a stiff or difficult to turn steering wheel. This can be caused by several factors, including low power steering fluid, a damaged power steering pump, or a leak in the power steering system.

Low power steering fluid can cause the power steering system to not function properly and make it difficult to turn the steering wheel. This can be easily fixed by checking and topping up the power steering fluid as needed.

A damaged power steering pump can also cause power steering problems in the Mazda 626. A faulty pump can cause a lack of pressure in the power steering system, which can lead to a stiff or hard-to-turn steering wheel. A replacement pump may be necessary to fix the issue.

Leaking power steering fluid can also cause problems with the power steering system in the Mazda 626. A leak can cause the power steering system to lose pressure, resulting in a hard-to-turn steering wheel. Finding and repairing the leak in the power steering system is necessary to solve this problem.

It is important to address power steering problems promptly, as they can affect the safety of driving the vehicle. If you experience any issues with the power steering system in your Mazda 626, it is recommended to have it inspected by a qualified mechanic.

4.3.3. Suspension Issues

The third generation of Mazda 626 (1988-1992) is known to have several suspension issues. One of the common problems is with the front suspension, particularly the struts. The struts tend to wear out quickly and become noisy, resulting in a bumpy ride. It is essential to replace worn-out struts as soon as possible to avoid further damage to the suspension system.

Another common issue with the third-generation Mazda 626's suspension is the sway bar bushings. Over time, the bushings tend to wear out, causing the sway bar to make noise, resulting in a rough and noisy ride. Replacing the sway bar bushings can significantly improve the ride quality of the vehicle.

The third-generation Mazda 626 is also known for having issues with the rear suspension. The rear shocks tend to wear out prematurely, resulting in a bouncy ride. The rear shocks need to be replaced with high-quality shocks to avoid further damage to the suspension system.

In addition to these issues, the third-generation Mazda 626 may also experience problems with the ball joints and control arms. Worn-out ball joints and control arms can cause the wheels to become misaligned, leading to steering problems and uneven tire wear. It is important to replace these components as soon as possible to avoid further damage to the suspension system.

Overall, if you own a third-generation Mazda 626, it is essential to keep a close eye on the suspension system and address any issues promptly to avoid further damage and ensure a smooth ride.

4.4. Fourth Generation Mazda 626 (1993-1997)

4.4.1. Transmission Failure

The fourth generation Mazda 626, produced from 1993 to 1997, was known for its transmission problems. Many owners reported issues with the automatic transmission, such as harsh shifting, slipping gears, and even complete failure. Some drivers reported that the transmission would fail to engage, while others experienced the transmission slipping out of gear during acceleration.

One common issue with the fourth generation Mazda 626 transmission was the failure of the torque converter. The torque converter is responsible for transferring power from the engine to the transmission, and when it fails, the car may not move at all. This issue was often accompanied by a grinding noise coming from the transmission.

Another common problem with the Mazda 626 transmission was the failure of the shift solenoids. These solenoids are responsible for controlling the transmission fluid flow, and when they fail, the car may experience harsh shifting or may not shift at all.

Some drivers also reported problems with the transmission range sensor, which is responsible for telling the car's computer which gear the transmission is in. When this sensor fails, the transmission may not shift properly or may not shift at all.

Overall, the fourth generation Mazda 626 transmission problems were a major issue for many owners, and some had to resort to expensive repairs or even transmission replacements.

4.4.2. Electrical Problems

Fourth Generation Mazda 626 (1993-1997) had its share of electrical problems. One of the most common issues is with the power windows. Many owners reported that the power windows stop working or become very slow. The culprit for this problem is the window motor or the window regulator, which can wear out over time.

Another common electrical problem is with the alternator. The alternator is responsible for charging the battery while the engine is running. If the alternator fails, the battery will not charge, and the car will not start. In some cases, a failed alternator can also damage other electrical components in the car.

The fourth-generation Mazda 626 also had issues with the dashboard lights. Many owners reported that the dashboard lights flicker or go out completely. The issue is usually caused by a faulty light switch or a bad connection in the wiring harness.

Finally, the fourth-generation Mazda 626 had problems with the door locks. Some owners reported that the door locks would not work properly, either not unlocking or not locking. The issue is typically caused by a failed door lock actuator, which is responsible for the lock mechanism's movement.

4.4.3. Fuel System Issues

The fourth-generation Mazda 626, produced from 1993 to 1997, had its fair share of fuel system issues. One of the most common problems reported by owners was a failure of the fuel pump. This could lead to the car stalling or refusing to start altogether. Some drivers also experienced issues with the fuel injectors, which could become clogged or damaged over time. When this happened, the engine would misfire, and the car's performance would suffer.

Another issue reported by Mazda 626 owners was a leak in the fuel tank, which could result in gasoline spilling onto the ground. This was a serious safety hazard, as gasoline is highly flammable and could potentially ignite. Some drivers also reported problems with the fuel gauge, which could give inaccurate readings, leading to them running out of gas unexpectedly.

The fuel system problems in the fourth-generation Mazda 626 were not limited to the engine. Some owners also experienced issues with the evaporative emissions control system, which is designed to prevent gasoline vapors from escaping into the atmosphere. If this system fails, it can cause the "check engine" light to come on, and the car may not pass an emissions test.

To avoid these fuel system issues, it's important to keep up with regular maintenance on your Mazda 626. This includes changing the fuel filter at the recommended intervals, using high-quality fuel, and avoiding running the car on a near-empty tank. If you do experience any fuel system problems, it's important to have them addressed promptly by a qualified mechanic to avoid any safety hazards and prevent further damage to your vehicle.

4.5. Fifth Generation Mazda 626 (1998-2002)

4.5.1. Engine Stalling

The fifth generation Mazda 626, produced from 1998 to 2002, was known for its sleek styling and advanced features, but it was not without its problems. One issue that some drivers experienced was engine stalling, where the engine would shut off unexpectedly while driving. There were a few potential causes for this problem, including a faulty fuel pump, a malfunctioning fuel pressure regulator, or a clogged fuel filter.

Another potential cause of engine stalling in the fifth generation Mazda 626 was a malfunctioning ignition system. This could be caused by a variety of factors, including worn spark plugs or ignition coils, a faulty distributor, or a malfunctioning engine control module (ECM). A dirty or clogged air filter could also cause engine stalling by reducing airflow to the engine and causing it to run too rich.

Some drivers also reported issues with the automatic transmission in the fifth generation Mazda 626. This included slipping gears, rough shifting, and transmission failure. The cause of these issues could vary, but some potential factors included worn transmission fluid or a faulty transmission control module (TCM).

Overall, the fifth generation Mazda 626 was generally a reliable car, but like any vehicle, it had its share of problems. Engine stalling and transmission issues were among the most common complaints, but regular maintenance and prompt repairs could help to mitigate these problems and keep the car running smoothly.

4.5.2. Transmission Issues

The fifth generation Mazda 626, produced from 1998 to 2002, was praised for its refined driving experience, spacious interior, and overall reliability. However, it was not free from transmission issues.

One common problem reported by Mazda 626 owners was related to the automatic transmission. Some drivers experienced erratic shifting, including harsh shifting or slipping gears. This issue was often caused by a faulty shift solenoid, which is responsible for regulating the flow of transmission fluid to change gears.

Another transmission-related issue was the sudden failure of the transmission, which could result in the car not moving or the engine revving without any power being delivered to the wheels. This issue was often caused by a failure in the transmission pump or torque converter.

Manual transmission models of the Mazda 626 also faced their own set of issues. Some drivers reported difficulty shifting or a grinding noise when shifting gears. This issue was often due to worn synchros or clutch components.

In addition to transmission problems, some Mazda 626 owners also reported electrical issues, such as dashboard warning lights illuminating for no apparent reason, or the car's computer malfunctioning.

Despite these issues, the Mazda 626 remains a popular and reliable car. Routine maintenance, such as regularly changing the transmission fluid and performing timely repairs, can help prevent or mitigate these problems.

4.5.3. Electrical Problems

The fifth-generation Mazda 626 (1998-2002) faced several electrical problems. One of the common issues was the malfunctioning of the power windows. The window regulator and motor assembly were prone to failure, leading to difficulties in opening or closing the windows. Some drivers also reported issues with the power door locks, which would stop functioning properly, making it difficult to unlock or lock the doors.

Another common electrical issue in the fifth-generation Mazda 626 was with the dashboard lights. Drivers reported that the lights would flicker, dim or go out completely, leading to difficulties in reading the instrument cluster. This could pose a safety risk, particularly at night when visibility is reduced.

The battery and charging system were also prone to failure in some Mazda 626 models. The alternator, which is responsible for charging the battery and powering the car's electrical systems, could fail, leading to battery drain and electrical system failures.

In some cases, the engine management system also malfunctioned, causing the engine to stall or run roughly. The cause of the issue was often traced to a faulty sensor or malfunctioning electronic control module (ECM).

Overall, the electrical problems in the fifth-generation Mazda 626 could be frustrating for drivers and costly to repair. It is important to regularly maintain the electrical system and address any issues promptly to prevent further damage.

5. Common Problems by Type of Engine

5.1. Mazda 626 with the F2 Engine

5.1.1. Engine Misfires

The Mazda 626 with the F2 engine is known to have issues with engine misfires. This is often caused by a failure of the ignition system, which can result in a loss of power and poor performance. Common symptoms of an engine misfire in the Mazda 626 with the F2 engine include rough idling, hesitation during acceleration, and a check engine light that illuminates on the dashboard.

One of the primary culprits of engine misfires in the Mazda 626 with the F2 engine is the ignition coil. Over time, the ignition coil can become worn or damaged, which can cause it to fail to provide a spark to the engine. This can result in misfires and poor performance. Another common cause of engine misfires in the Mazda 626 with the F2 engine is a faulty distributor cap or rotor. These components can become worn or damaged, leading to a loss of spark and misfires.

In addition to ignition system failures, other issues that can cause engine misfires in the Mazda 626 with the F2 engine include clogged fuel injectors, a malfunctioning fuel pressure regulator, or a faulty oxygen sensor. These issues can cause a lean or rich fuel mixture, which can result in engine misfires.

To address engine misfires in the Mazda 626 with the F2 engine, it is important to diagnose and repair the underlying issue. This may involve replacing the ignition coil, distributor cap, rotor, fuel injectors, fuel pressure regulator, or oxygen sensor, depending on the root cause of the misfire. Regular maintenance, such as changing the spark plugs and ignition wires, can also help to prevent engine misfires in the Mazda 626 with the F2 engine.

5.1.2. Valve Cover Gasket Leaks

The Mazda 626 equipped with the F2 engine has been known to experience valve cover gasket leaks, which can lead to oil leaks and engine damage if not addressed promptly. The valve cover gasket is a crucial component that seals the valve cover to the engine block and prevents oil from leaking out. Over time, the gasket can become worn, cracked, or damaged, causing oil to leak out from the valve cover.

Signs of a valve cover gasket leak include oil puddles under the car, burning oil smell, and visible oil leaking from the valve cover. If left unchecked, a valve cover gasket leak can lead to reduced oil pressure, engine overheating, and potential engine failure.

To address a valve cover gasket leak, the valve cover must be removed, and the old gasket must be replaced with a new one. It's important to choose a high-quality gasket to ensure a proper seal and prevent future leaks. Additionally, it's a good idea to inspect the valve cover and surrounding components for any signs of wear or damage and replace them as needed. Regular maintenance and inspections can help prevent valve cover gasket leaks and other engine issues in the Mazda 626 with the F2 engine.

5.1.3. Timing Belt Issues

The timing belt is an essential component in the Mazda 626's F2 engine that ensures that the engine's valves open and close correctly. Over time, the timing belt can wear out or break, causing severe problems with the engine's performance. One of the most common issues with the F2 engine is timing belt failure, which can lead to significant engine damage.

If the timing belt breaks while the engine is running, the engine will immediately stop working, and the driver will be unable to restart it. In addition, the timing belt can cause severe engine damage if it snaps while the engine is running. This is because the engine's pistons and valves will collide, causing significant damage to the engine's internal components.

To prevent timing belt failure, Mazda recommends replacing the timing belt every 60,000 to 90,000 miles, depending on the vehicle's usage and driving conditions. In addition, the timing belt tensioner should be replaced at the same time as the timing belt to ensure proper tension and prevent premature wear.

Symptoms of a failing timing belt include engine misfires, decreased engine performance, and unusual engine noises. If any of these symptoms are noticed, the timing belt should be inspected immediately to prevent further engine damage. A skilled mechanic should inspect the timing belt periodically to ensure that it is in good condition and that it is not showing any signs of wear or damage.

5.2. Mazda 626 with the FE Engine

5.2.1. Oil Leaks

The Mazda 626 with the FE engine is known to have oil leaks as a common problem. The FE engine is a 2.0-liter 4-cylinder engine used in the 1993-2002 Mazda 626 models. Over time, the gaskets and seals in the engine can wear out or become damaged, leading to oil leaks.

One common area for oil leaks is the valve cover gasket. The valve cover gasket is responsible for sealing the top of the engine and preventing oil from leaking out. However, over time, the gasket can become brittle and crack, leading to oil leaks. Another common area for oil leaks is the oil pan gasket. The oil pan gasket is responsible for sealing the bottom of the engine and preventing oil from leaking out. However, over time, the gasket can become damaged or worn, leading to oil leaks.

Additionally, the front crankshaft seal and rear main seal are also prone to oil leaks. The front crankshaft seal is located at the front of the engine and is responsible for sealing the crankshaft as it rotates. The rear main seal is located at the rear of the engine and is responsible for sealing the rear of the crankshaft. If these seals become damaged or worn, oil can leak out.

Oil leaks can be a nuisance and can also lead to more serious problems if left unaddressed, such as engine damage due to low oil levels. It's important to regularly check for oil leaks and address any issues as soon as they arise. Replacing the gaskets and seals responsible for the leaks can help prevent further leaks from occurring.

5.2.2. Overheating

The Mazda 626 equipped with the FE engine has been known to experience overheating issues. One of the most common causes of overheating is a faulty thermostat. If the thermostat is stuck closed, coolant will not flow through the engine and radiator, causing the engine to overheat. In addition, a damaged or leaking radiator, a failed water pump, or a broken fan belt can also cause overheating.

Another cause of overheating in the Mazda 626 with the FE engine is a malfunctioning cooling fan. The cooling fan is responsible for pulling air through the radiator to cool the engine. If the fan is not functioning properly, it can cause the engine to overheat. The fan can malfunction due to a faulty fan motor, a bad fan relay, or a blown fuse.

A low coolant level can also cause overheating. If there is not enough coolant in the system, the engine will not be able to properly cool itself. This can be caused by a coolant leak or a blown head gasket, which can allow coolant to leak into the engine cylinders.

In order to prevent overheating issues in the Mazda 626 with the FE engine, it is important to regularly maintain the cooling system. This includes regularly checking the coolant level and ensuring that all components of the cooling system are in good working order. Additionally, it is important to have the thermostat replaced if it is found to be faulty and to address any coolant leaks or other issues as soon as they are detected.

5.2.3. Piston Ring Failure

The Mazda 626 with the FE engine is known to experience piston ring failure, which can result in several issues. The piston rings are responsible for sealing the combustion chamber and ensuring that oil is kept out of the combustion process. If the piston rings fail, oil can leak into the combustion chamber, leading to a range of issues.

One of the most common symptoms of piston ring failure is excessive oil consumption. This occurs because oil is being burned along with the fuel in the combustion chamber. The engine may also emit blue or white smoke from the tailpipe due to the burning oil. In addition, the engine may experience a loss of power, as the oil in the combustion chamber can interfere with the proper combustion of the fuel.

Piston ring failure can also lead to decreased compression in the engine cylinders, which can cause the engine to misfire or run rough. In severe cases, the engine may even fail to start at all. Additionally, the excess oil in the combustion chamber can cause damage to the spark plugs, oxygen sensors, and catalytic converter, leading to further problems and expenses.

Regular maintenance and oil changes can help prevent piston ring failure in the Mazda 626 with the FE engine. However, if you notice any of the symptoms mentioned above, it is important to have your vehicle inspected by a qualified mechanic to diagnose and address the issue promptly.

5.3. Mazda 626 with the FS Engine

5.3.1. Transmission Failure

The Mazda 626 equipped with the FS engine has been reported to have transmission failure issues. These transmissions are known to have problems with the shift solenoids, valve bodies, and torque converters. Symptoms of transmission failure can include rough shifting, slipping gears, delayed engagement, and complete transmission failure.

One possible cause of transmission failure is inadequate maintenance. Regular fluid and filter changes can help prolong the life of the transmission. However, even with proper maintenance, the transmission can still fail due to manufacturing defects or design flaws.

Another potential cause of transmission failure is excessive heat. Overheating can cause the transmission fluid to break down, leading to increased wear on the internal components. Additionally, overheating can cause the transmission seals to fail, resulting in leaks and further damage to the transmission.

To avoid transmission failure, it is recommended to follow the manufacturer's recommended maintenance schedule and to have the transmission inspected if any symptoms of failure occur. In some cases, it may be necessary to have the transmission rebuilt or replaced to restore proper function.

5.3.2. Fuel Pump Issues

The Mazda 626 with the FS engine is known to have fuel pump issues. One of the most common symptoms of a faulty fuel pump is engine hesitation or stalling, especially during acceleration. A fuel pump that is failing may also cause the engine to misfire, hesitate or stall while driving at higher speeds or uphill. In some cases, the engine may not start at all due to lack of fuel pressure.

Other signs of a failing fuel pump include difficulty starting the engine, especially after the vehicle has been sitting for a while, as well as a decrease in fuel efficiency. In some cases, a failing fuel pump may also cause the vehicle to emit a strong gasoline odor.

The fuel pump is an essential component of the vehicle's fuel system, responsible for supplying fuel from the tank to the engine. A failing fuel pump can cause serious damage to the engine if not addressed promptly. Therefore, it is important to have any fuel system issues diagnosed and repaired by a qualified mechanic as soon as possible. In some cases, the fuel pump may need to be replaced to resolve the issue.

5.3.3. Engine Misfires

The Mazda 626 with the FS engine has been known to experience engine misfires. This issue may be caused by a variety of factors, including faulty ignition coils, spark plugs, or fuel injectors. These components are all critical to the proper functioning of the engine and must be in good working order to ensure that the fuel is properly ignited and the engine runs smoothly.

One of the most common causes of engine misfires in the Mazda 626 is a faulty ignition coil. Ignition coils are responsible for generating the high voltage required to ignite the fuel mixture in the engine's cylinders. If an ignition coil fails, it can cause a misfire in one or more cylinders, leading to rough idling, reduced power, and increased emissions.

Another potential culprit for engine misfires is worn spark plugs. Spark plugs are responsible for igniting the fuel mixture in the engine's cylinders. Over time, spark plugs can become fouled with deposits or worn out, leading to misfires and other engine problems. It is recommended that spark plugs be replaced every 30,000 to 60,000 miles to ensure proper engine performance.

Finally, fuel injectors can also be a source of engine misfires. Fuel injectors are responsible for delivering fuel to the engine's cylinders at the correct time and in the correct amount. If a fuel injector is clogged or damaged, it can cause a misfire in one or more cylinders, leading to reduced performance and increased emissions.

5.4. Mazda 626 with the KL Engine

5.4.1. Timing Chain Tensioner Failure

The Mazda 626 equipped with the KL engine may experience timing chain tensioner failure. This issue is more prevalent in models with higher mileage. The timing chain tensioner is responsible for keeping the timing chain tight, ensuring that the engine's valves open and close at the right time. When the timing chain tensioner fails, the timing chain can become loose, causing the engine's timing to be off. This can result in engine misfires, rough idle, and even engine damage in severe cases.

Symptoms of a timing chain tensioner failure in the Mazda 626 may include a rattling noise coming from the engine, particularly at startup or at low speeds. The engine may also experience a loss of power or acceleration, and the check engine light may be illuminated.

If you suspect that your Mazda 626 may be experiencing timing chain tensioner failure, it is essential to have it diagnosed and repaired by a qualified mechanic. Continuing to drive the vehicle with a faulty timing chain tensioner can cause significant engine damage and result in expensive repairs.

5.4.2. Crankshaft Position Sensor Problems

The Mazda 626 with the KL engine is known to experience crankshaft position sensor problems. The crankshaft position sensor is an essential component that monitors the position of the crankshaft and sends signals to the engine control module (ECM) to determine ignition timing and fuel injection. When the sensor fails, the ECM cannot accurately determine the position of the crankshaft, leading to problems with engine performance.

One common symptom of a faulty crankshaft position sensor is intermittent stalling or failure to start. The engine may also run roughly or misfire, and the check engine light may illuminate. In some cases, the engine may fail to start altogether.

If you suspect a problem with the crankshaft position sensor in your Mazda 626 with the KL engine, it is important to have it diagnosed and repaired as soon as possible. A professional mechanic can use diagnostic tools to identify the specific issue and replace the sensor if necessary.

In some cases, a faulty sensor may also cause damage to other engine components, such as the timing belt or camshaft position sensor. It is crucial to address the issue promptly to avoid further damage and costly repairs. Regular maintenance and inspections can help prevent sensor failure and other engine problems in the Mazda 626 with the KL engine.

5.4.3. Cylinder Head Gasket Failure

The Mazda 626 with the KL engine has been known to experience cylinder head gasket failure. This problem can be attributed to several factors, such as a warped cylinder head or an improperly tightened cylinder head bolts. Symptoms of a failing cylinder head gasket include overheating, loss of coolant, and engine misfires. It is important to address this issue promptly, as continued driving with a damaged cylinder head gasket can cause serious engine damage and require expensive repairs.

One common cause of cylinder head gasket failure in the Mazda 626 with the KL engine is a warped cylinder head. This can occur due to overheating or improper maintenance, which causes the head to become distorted and unable to properly seal the gasket. Additionally, incorrect torque specifications when tightening the cylinder head bolts can lead to uneven pressure on the gasket, causing it to fail prematurely.

To prevent cylinder head gasket failure, it is important to perform regular maintenance on your Mazda 626, including regular oil changes and coolant flushes. It is also crucial to ensure that the cylinder head bolts are tightened to the manufacturer's specifications and torqued in the proper sequence. If you suspect that your Mazda 626 is experiencing cylinder head gasket failure, it is recommended to bring it to a qualified mechanic for diagnosis and repair.

6. Conclusion

6.1. Overall Reliability of the Mazda 626

The Mazda 626 was a midsize sedan produced by Mazda from 1978 to 2002. Throughout its production, the Mazda 626 was generally known for its reliability and durability, with many owners praising its longevity and low maintenance costs. However, like any car, the Mazda 626 was not without its problems.

In terms of overall reliability, the Mazda 626 was generally considered to be a reliable car, with few major issues reported. The car's engine was known to be durable and long-lasting, with many examples of the car reaching high mileage with few major issues. The transmission was also generally reliable, though some models were known to experience issues with shifting or slipping.

However, like many cars of its era, the Mazda 626 was not immune to issues with rust and corrosion. In particular, models from the 1980s and 1990s were known to experience rust in areas such as the wheel wells and rocker panels. Additionally, some owners reported issues with electrical components such as the alternator, starter, and power windows.

Overall, the Mazda 626 was generally considered to be a reliable and durable car, with few major issues reported. However, as with any car, regular maintenance and upkeep are crucial to ensuring the car's longevity and reliability. Owners of the Mazda 626 should be sure to stay on top of routine maintenance tasks such as oil changes, fluid checks, and tire rotations to keep their car running smoothly for years to come.

6.2. Common Maintenance and Repair Costs

When it comes to the Mazda 626, there are several common maintenance and repair costs that owners can expect to encounter over the lifetime of the vehicle. Regular maintenance costs, such as oil changes, tire rotations, and brake pad replacements, are to be expected and can help prevent more costly repairs down the line.

Other common repair costs may include fixing electrical issues, replacing timing belts or chains, repairing transmission problems, and addressing engine misfires. The cost of these repairs can vary depending on the severity of the issue, the age of the vehicle, and the expertise of the mechanic.

It's important to note that older Mazda 626 models may require more frequent repairs and maintenance due to wear and tear over time. This can increase the overall cost of ownership and should be taken into consideration when purchasing a used Mazda 626.

To keep repair costs down, it's recommended to find a reliable and experienced mechanic who specializes in Mazda vehicles. Regularly scheduled maintenance can also help prevent larger and more expensive repairs down the line. Overall, while the Mazda 626 may require some maintenance and repairs over time, with proper care and attention it can be a reliable and long-lasting vehicle.

6.3. Tips for Keeping Your Mazda 626 Running Smoothly

The Mazda 626 is a reliable car, but like any vehicle, it requires regular maintenance to keep it running smoothly. Here are some tips for keeping your Mazda 626 in good condition:

1. Follow the recommended maintenance schedule: The owner's manual for your Mazda 626 will outline the recommended maintenance schedule. This includes oil changes, tire rotations, and other regular checks. By following this schedule, you can catch problems early and prevent more serious issues from developing.

2. Check your fluids regularly: Regularly checking your car's fluid levels, such as engine oil, transmission fluid, and brake fluid, can help prevent major problems. Low fluid levels can lead to serious damage to your car's engine or transmission.

3. Keep your tires properly inflated: Proper tire inflation can improve fuel efficiency and prolong the life of your tires. Be sure to check your tire pressure regularly and fill them to the recommended pressure.

4. Watch for warning signs: If you notice any warning signs, such as unusual noises, vibrations, or a check engine light, take your car to a mechanic right away. Catching problems early can save you money on repairs.

5. Use quality parts: When replacing parts on your Mazda 626, be sure to use quality parts from a reputable source. Cheap, low-quality parts can cause more problems down the road.

By following these tips and staying on top of regular maintenance, you can keep your Mazda 626 running smoothly for years to come.

6.4. When to Consider Selling or Trading in Your Mazda 626

If you're a Mazda 626 owner, you may be wondering when it's time to consider selling or trading in your vehicle. There are a few factors to consider when making this decision.

First, think about the age and condition of your vehicle. As a general rule, the older your vehicle is, the more likely it is to have problems and require expensive repairs. If your Mazda 626 is more than 10 years old and has high mileage, you may want to consider selling it before major issues arise.

Second, consider your driving habits and needs. If you're regularly driving long distances or using your vehicle for work purposes, it's important to have a reliable vehicle that you can count on. If you're constantly worried about your Mazda 626 breaking down, it may be time to consider selling it and investing in a newer, more reliable vehicle.

Third, think about the overall cost of ownership. If you find that you're spending more money on repairs and maintenance than the car is worth, it may be time to cut your losses and trade it in for a newer vehicle with lower maintenance costs.

Ultimately, the decision to sell or trade in your Mazda 626 comes down to your individual circumstances and priorities. If you're experiencing ongoing issues with your vehicle, or it's no longer meeting your needs, it may be time to start looking for a new car that you can rely on.

Example List of Mazda 626 Engine Error Codes and Descriptions

Engine Code/NameEngine specs (l, fuel, hp)Part carError codeDescription
FS-DE2.0L, Gasoline, 130hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
FS-ZE2.0L, Gasoline, 170hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
KL-DE2.5L, Gasoline, 164hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
KL-ZE2.5L, Gasoline, 200hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
FP-DE1.8L, Gasoline, 116hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
RF-T2.0L, Diesel, 110hpGlow plugsP0380Glow Plug/Heater Circuit "A" Malfunction
:----------------::------------------------::--------::----------::-----------:
RF-CX2.0L, Diesel, 101hpGlow plugsP0380Glow Plug/Heater Circuit "A" Malfunction
:----------------::------------------------::--------::----------::-----------:
B6-ME1.6L, Gasoline, 88hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
KF-DE2.0L, Gasoline, 115hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
KL-DE2.5L, Gasoline, 164hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
FP1.8L, Gasoline, 115hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
RF-T2.0L, Diesel, 101hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
KL-ZE2.5L, Gasoline, 170hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
B61.6L, Gasoline, 82hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
ZM1.6L, Gasoline, 103hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
FS-DE2.0L, Gasoline, 131hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
RF2.0L, Diesel, 90hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
FS-ZE2.0L, Gasoline, 164hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
KL2.5L, Gasoline, 164hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
KF2.5L, Diesel, 115hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
G52.5L, Gasoline, 170hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
MZR-CD2.0L, Diesel, 140hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
FP1.8L, Gasoline, 124hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
BP1.8L, Gasoline, 115hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
ZM1.6L, Gasoline, 104hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
B61.6L, Gasoline, 90hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
FS2.0L, Gasoline, 130hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
KL2.5L, Gasoline, 164hpFuel systemP0171System too lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
RF2.0L, Diesel, 110hpFuel systemP0200Injector Circuit/Open - Cylinder 1
:----------------::------------------------::--------::----------::-----------:
RFN2.0L, Diesel, 101hpFuel systemP0200Injector Circuit/Open - Cylinder 1
:----------------::------------------------::--------::----------::-----------:
RFT2.0L, Diesel, 121hpFuel systemP0200Injector Circuit/Open - Cylinder 1
:----------------::------------------------::--------::----------::-----------:
RF-TDI2.0L, Diesel, 109hpFuel systemP0200Injector Circuit/Open - Cylinder 1
:----------------::------------------------::--------::----------::-----------:
KL-DE2.5L, Gasoline, 164hpIgnition systemP0300Random/Multiple Cylinder Misfire Detected
:----------------::------------------------::--------::----------::-----------:
KL-ZE2.5L, Gasoline, 197hpIgnition systemP0300Random/Multiple Cylinder Misfire Detected
:----------------::------------------------::--------::----------::-----------:
FS-DE2.0L, Gasoline, 130hpFuel systemP0171System Too Lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
FS-ZE2.0L, Gasoline, 170hpFuel systemP0171System Too Lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
FP1.8L, Gasoline, 115hpIgnition systemP0300Random/Multiple Cylinder Misfire Detected
:----------------::------------------------::--------::----------::-----------:
B61.6L, Gasoline, 105hpIgnition systemP0300Random/Multiple Cylinder Misfire Detected
:----------------::------------------------::--------::----------::-----------:
KL-DE2.5L, Gasoline, 170hpIgnition systemP0300Random/Multiple Cylinder Misfire Detected
:----------------::------------------------::--------::----------::-----------:
RF2.0L, Diesel, 101hpFuel systemP0251Injection Pump Fuel Metering Control "A" Malfunction
:----------------::------------------------::--------::----------::-----------:
KL-ZE2.5L, Gasoline, 200hpIgnition systemP0300Random/Multiple Cylinder Misfire Detected
:----------------::------------------------::--------::----------::-----------:
FS2.0L, Gasoline, 125hpFuel systemP0171System Too Lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
FP1.8L, Gasoline, 122hpIgnition systemP0300Random/Multiple Cylinder Misfire Detected
:----------------::------------------------::--------::----------::-----------:
B61.6L, Gasoline, 105hpFuel systemP0171System Too Lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
ZM1.6L, Gasoline, 105hpIgnition systemP0300Random/Multiple Cylinder Misfire Detected
:----------------::------------------------::--------::----------::-----------:
B6-ZE1.6L, Gasoline, 115hpFuel systemP0171System Too Lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
FS2.0L, Gasoline, 130hpIgnition systemP0300Random/Multiple Cylinder Misfire Detected
:----------------::------------------------::--------::----------::-----------:
KF2.0L, Gasoline, 115hpFuel systemP0171System Too Lean (Bank 1)
:----------------::------------------------::--------::----------::-----------:
RF2.0L, Diesel, 101hpFuel systemP0087Fuel Rail/System Pressure Too Low
:----------------::------------------------::--------::----------::-----------:
KL2.5L, Gasoline, 168hpIgnition systemP0300Random/Multiple Cylinder Misfire Detected
:----------------::------------------------::--------::----------::-----------:
KL-ZE2.5L, Gasoline, 197hpIgnition systemP0300Random/Multiple Cylinder Misfire Detected
:----------------::------------------------::--------::----------::-----------:
FSD2.0L, Diesel, 101hpFuel systemP0087Fuel Rail/System Pressure Too Low
:----------------::------------------------::--------::----------::-----------:
FP1.8L, Gasoline, 115hpTransmission systemP0730Incorrect Gear Ratio
:----------------::------------------------::--------::----------::-----------:
FS2.0L, Gasoline, 130hpIgnition systemP0300Random/Multiple Cylinder Misfire Detected

FAQ: Common Issues with the Mazda 626

What are the common overheating issues in the Mazda 626?

Overheating is a common issue in Mazda 626 cars, especially those with the FE engine. This problem is often caused by a malfunctioning radiator fan or a faulty thermostat. It is also possible that the engine coolant level is low, which can cause the engine to overheat. It's important to get your car checked by a mechanic to identify the root cause of the overheating.

What are the signs of a failing fuel pump in the Mazda 626?

A failing fuel pump in Mazda 626 with the FS engine can cause several symptoms, including difficulty starting the engine, engine stalling, reduced power, and surging or bucking during acceleration. Additionally, you may notice a whining noise coming from the fuel tank area. If you experience any of these symptoms, it's best to have your fuel system inspected and diagnosed by a professional mechanic.

What causes engine misfires in Mazda 626 with the FS engine?

Engine misfires can be caused by a variety of factors, including a failing ignition coil, faulty spark plugs, or clogged fuel injectors. These problems can cause the engine to misfire and create a rough idle, hesitation during acceleration, and decreased fuel efficiency. If you suspect an engine misfire, it's important to have your car inspected by a qualified mechanic to diagnose and repair the issue.

What are the symptoms of a failing crankshaft position sensor in the Mazda 626 with the KL engine?

A failing crankshaft position sensor can cause several symptoms, including intermittent starting problems, engine stalling, and reduced power. Additionally, you may notice the check engine light on the dashboard, and the car may fail to start at all. If you experience any of these symptoms, have your car diagnosed by a qualified mechanic to determine if the crankshaft position sensor is the issue.

What are the common issues with the transmission in Mazda 626 with the FS engine?

The automatic transmission in Mazda 626 with the FS engine is known to have issues with slipping, harsh shifting, and failure to shift. These problems are often caused by low transmission fluid levels or a damaged transmission valve body. It's important to have your transmission inspected by a qualified mechanic to identify and repair the issue.

What causes piston ring failure in Mazda 626 with the FE engine?

Piston ring failure is a common issue in Mazda 626 cars with the FE engine. This problem is often caused by excessive wear and tear or overheating of the engine. Symptoms of piston ring failure include excessive oil consumption, blue smoke from the exhaust, and reduced engine power. If you suspect piston ring failure, it's important to have your car inspected by a qualified mechanic to determine the cause and repair the issue.

What are the common causes of cylinder head gasket failure in Mazda 626 with the KL engine?

Cylinder head gasket failure is often caused by overheating or lack of proper maintenance in Mazda 626 with the KL engine. Symptoms of a faulty cylinder head gasket include engine misfires, white smoke from the exhaust, and coolant leaks. It's essential to have your car inspected by a qualified mechanic to diagnose and repair any issues with the cylinder head gasket.

What are the common causes of transmission failure in Mazda 626 with the FS engine?

The common causes of transmission failure in Mazda 626 with the FS engine are worn-out bearings, broken gears, and worn-out clutches. Lack of maintenance, overheating, and contaminated fluid can also contribute to transmission failure.

What are the symptoms of a faulty fuel pump in Mazda 626 with the FS engine?

The symptoms of a faulty fuel pump in Mazda 626 with the FS engine include difficulty starting the car, poor fuel efficiency, loss of power while driving, and a whining noise coming from the fuel tank. In some cases, the car may not start at all.

What are the causes of engine misfires in Mazda 626 with the FS engine?

Engine misfires in Mazda 626 with the FS engine can be caused by a number of factors, including faulty spark plugs, damaged ignition coils, clogged fuel injectors, and low fuel pressure. Vacuum leaks, a faulty mass airflow sensor, and a malfunctioning engine control module (ECM) can also contribute to engine misfires.

What are the signs of a failing timing chain tensioner in Mazda 626 with the KL engine?

The signs of a failing timing chain tensioner in Mazda 626 with the KL engine include a rattling or clicking noise coming from the engine, difficulty starting the car, reduced power while driving, and a rough or uneven idle. If left untreated, a faulty timing chain tensioner can cause serious engine damage.

What are the symptoms of a faulty crankshaft position sensor in Mazda 626 with the KL engine?

The symptoms of a faulty crankshaft position sensor in Mazda 626 with the KL engine include difficulty starting the car, reduced power while driving, and a loss of engine performance. In some cases, the car may not start at all. A faulty crankshaft position sensor can also cause the Check Engine light to turn on.

What are the signs of a failing cylinder head gasket in Mazda 626 with the KL engine?

The signs of a failing cylinder head gasket in Mazda 626 with the KL engine include white smoke coming from the exhaust, a sweet smell from the exhaust, overheating, a loss of engine power, and engine misfires. In some cases, the coolant may mix with the engine oil, causing a milky appearance.

What are the common fuel pump issues in the Mazda 626 with the FS engine?

The fuel pump in the Mazda 626 with the FS engine can fail and cause issues such as the engine not starting, stalling, or hesitating during acceleration. This problem can occur in all model years and trim levels of the Mazda 626 with the FS engine.

How can I prevent transmission failure in my Mazda 626 with the FS engine?

Regular maintenance, such as changing the transmission fluid and filter according to the manufacturer's recommendations, can help prevent transmission failure in the Mazda 626 with the FS engine. Additionally, avoiding hard acceleration and abrupt shifts can reduce the strain on the transmission and prolong its lifespan.

What is the most common cause of engine misfires in the Mazda 626 with the FS engine?

The most common cause of engine misfires in the Mazda 626 with the FS engine is a faulty ignition coil. Other potential causes include a clogged fuel injector, a vacuum leak, or a faulty spark plug.

How can I prevent piston ring failure in my Mazda 626 with the FE engine?

Regular oil changes and proper maintenance of the engine can help prevent piston ring failure in the Mazda 626 with the FE engine. Additionally, avoiding hard acceleration and driving at high RPMs for extended periods can reduce the strain on the engine and prolong its lifespan.

What are the symptoms of a timing chain tensioner failure in the Mazda 626 with the KL engine?

Symptoms of a timing chain tensioner failure in the Mazda 626 with the KL engine can include a rattling or ticking noise coming from the engine, poor acceleration, and a check engine light. This problem can occur in all model years and trim levels of the Mazda 626 with the KL engine.

How can I prevent cylinder head gasket failure in my Mazda 626 with the KL engine?

Regular maintenance of the engine and cooling system, such as changing the oil and coolant according to the manufacturer's recommendations, can help prevent cylinder head gasket failure in the Mazda 626 with the KL engine. Additionally, avoiding overheating and excessive pressure on the engine can reduce the risk of gasket failure.

What causes engine misfires in the Mazda 626 with the FS engine?

Engine misfires in the Mazda 626 with the FS engine can be caused by a variety of issues, such as faulty spark plugs, ignition coils, or fuel injectors. Carbon buildup in the engine can also cause misfires.

What Mazda 626 models are affected by timing chain tensioner failure with the KL engine?

The timing chain tensioner failure is commonly reported in Mazda 626 models with the KL engine, including the 1993-1997 Mazda 626 and the 1993-1997 Mazda MX-6.

How can I prevent fuel pump issues in my Mazda 626 with the FS engine?

Regular maintenance is key to preventing fuel pump issues in Mazda 626 models with the FS engine. This includes replacing the fuel filter every 30,000 miles and keeping the fuel tank at least a quarter full to prevent the pump from overheating.

How can I tell if my Mazda 626 with the KL engine has a faulty crankshaft position sensor?

A faulty crankshaft position sensor in Mazda 626 models with the KL engine can cause the engine to stall or not start at all. A diagnostic test can confirm if the sensor is faulty.

What Mazda 626 models are most likely to experience cylinder head gasket failure with the KL engine?

Cylinder head gasket failure is commonly reported in Mazda 626 models with the KL engine, including the 1993-1997 Mazda 626 and the 1993-1997 Mazda MX-6.

Are Mazda 626 models reliable overall?

Mazda 626 models are generally reliable, but they do have some known issues, such as those listed above. Regular maintenance and prompt repairs can help prolong the lifespan and reliability of a Mazda 626.

What are some common issues with the fuel pump in Mazda 626 with the FS engine?

The fuel pump in Mazda 626 with the FS engine can experience several issues such as failure due to wear and tear, rust, or a clogged fuel filter. Symptoms of a failing fuel pump include difficulty starting the engine, stalling, poor acceleration, and reduced fuel efficiency.

What should I do if my Mazda 626 with the KL engine is experiencing timing chain tensioner failure?

If you suspect that your Mazda 626 with the KL engine is experiencing timing chain tensioner failure, it is important to have it diagnosed and repaired as soon as possible. Continued use of the vehicle with this issue can cause severe engine damage. Replacement of the timing chain tensioner is typically necessary to resolve this problem.

What are some signs of a failing crankshaft position sensor in a Mazda 626 with the KL engine?

Symptoms of a failing crankshaft position sensor in a Mazda 626 with the KL engine include difficulty starting the engine, rough idling, stalling, and poor acceleration. If left untreated, this issue can cause severe engine damage and potentially result in complete engine failure.

How can I prevent cylinder head gasket failure in my Mazda 626 with the KL engine?

Regular maintenance is crucial in preventing cylinder head gasket failure in your Mazda 626 with the KL engine. This includes routine oil changes, maintaining proper engine coolant levels, and monitoring the engine temperature gauge. It is also important to have any potential issues with the engine diagnosed and repaired as soon as possible to prevent further damage.


Brian Wong - Senior Reviews Editor of cars-directory.net

Brian Wong / Author

Brian Wong is an accomplished automotive journalist and editor with a passion for cars. With over a decade of experience in the industry, he has established himself as a trusted voice in the automotive community. Brian has written extensively about a wide range of topics in the field, from the latest trends in car design to innovative safety features and emerging technologies. As a senior reviews editor, he is responsible for test driving and analyzing the latest cars on the market, providing readers with accurate and objective reviews. His articles are widely read and respected for their depth of knowledge and analysis. Brian is committed to staying at the forefront of the latest developments in the automotive industry, and is dedicated to sharing his expertise and insights with his readers.



Updated on March 29, 2024