Common Issues with Mitsubishi Proudia and How to Fix Them

By Brian Wong, Reviewed by: Kurt Niebuhr, Updated on April 19, 2024

1. Introduction

The Mitsubishi Proudia was a luxury sedan produced by Mitsubishi Motors from 1991 to 2001. During its production run, the Proudia was offered in various trim levels and with multiple engine options.

One of the most common issues with the Proudia was power steering leaks. This problem was particularly prevalent in the earlier models produced from 1991 to 1995. The power steering system would often develop leaks due to the age of the vehicle or damage to the hoses or seals. In some cases, the power steering pump may also fail, causing further issues.

Transmission failure was another common issue with the Proudia, particularly in the earlier models. The automatic transmission was prone to slipping or shifting roughly, which could lead to a complete failure of the transmission. This issue was often caused by wear and tear on the transmission components or insufficient maintenance.

Fuel pump failure was another common issue with the Proudia, particularly in the 1996-2000 models. The fuel pump was known to fail due to a variety of reasons, including age, wear and tear, or contamination from dirty fuel. A failed fuel pump would cause the engine to stall or not start at all.

Another issue that affected many Proudia owners was engine misfires. This problem was most common in the 1996-2000 models and was often caused by faulty spark plugs, ignition coils, or fuel injectors. Engine misfires would result in a rough idle, reduced power, and poor fuel economy.

Cooling system problems were also a common issue with the Proudia, particularly in the Proudia Super Exceed model. The cooling system was known to develop leaks or fail due to a variety of reasons, including worn-out hoses, damaged radiator, or a malfunctioning thermostat. A failed cooling system could lead to engine overheating, which could cause severe damage to the engine.

Regular maintenance is essential to keep a Proudia running smoothly and prevent issues from developing. It's important to perform regular oil changes, inspect the cooling system, and replace worn-out components as needed. If you're experiencing issues with your Proudia, it's recommended to consult with a qualified mechanic to diagnose and repair the problem.

2. Common issues by year range

2.1. 1991-1995 models

The Mitsubishi Proudia was first introduced in 1991 and was produced until 2001. During the first few years of production, the Proudia faced a number of issues that were specific to the 1991-1995 models.

One of the most common issues with the 1991-1995 Proudia models was power steering leaks. Many owners reported that their power steering systems would develop leaks due to the age of the vehicle or damage to the hoses or seals. This issue was often caused by the frequent use of the power steering system and could result in difficulty steering the vehicle.

Transmission failure was also a common issue with the earlier Proudia models. The automatic transmission was prone to slipping or shifting roughly, which could lead to a complete failure of the transmission. This issue was often caused by wear and tear on the transmission components or insufficient maintenance.

Another issue that affected the 1991-1995 Proudia models was alternator failure. The alternator was known to fail due to a variety of reasons, including age, wear and tear, or damage from driving on rough roads. A failed alternator could cause the battery to drain, which could lead to a no-start condition.

Owners of the 1991-1995 Proudia models also reported issues with the air conditioning system. The air conditioning was known to fail due to leaks in the system or a malfunctioning compressor. This issue could result in reduced cooling performance or a complete failure of the air conditioning system.

Regular maintenance and inspections are important to keep the 1991-1995 Proudia models running smoothly and prevent issues from developing. It's important to perform regular oil changes, inspect the power steering system, and replace worn-out components as needed. If you're experiencing issues with your 1991-1995 Proudia, it's recommended to consult with a qualified mechanic to diagnose and repair the problem.

2.2. 1996-2000 models

The Mitsubishi Proudia underwent several changes in its design and production from 1996 to 2000. While many of the issues faced by earlier models were addressed, there were still some common problems that affected the 1996-2000 Proudia models.

One of the most common issues with the 1996-2000 Proudia models was engine overheating. Many owners reported that their engines would overheat due to a variety of reasons, including a malfunctioning thermostat, a leaking radiator, or a damaged water pump. Engine overheating could cause damage to the engine and result in expensive repairs.

Transmission issues also continued to affect the 1996-2000 Proudia models. Owners reported that the automatic transmission would sometimes fail to shift smoothly or slip gears. This issue was often caused by worn-out transmission components or insufficient maintenance.

Another common issue with the 1996-2000 Proudia models was electrical problems. Owners reported issues with the battery, alternator, and starter, as well as various sensors and control modules. These issues could result in a variety of symptoms, such as a no-start condition or warning lights on the dashboard.

The air conditioning system continued to be a problem with the 1996-2000 Proudia models as well. Owners reported leaks in the system, as well as issues with the compressor and other components. These issues could result in reduced cooling performance or a complete failure of the air conditioning system.

Regular maintenance and inspections are important to keep the 1996-2000 Proudia models running smoothly and prevent issues from developing. It's important to perform regular coolant flushes, inspect the transmission and electrical system, and replace worn-out components as needed. If you're experiencing issues with your 1996-2000 Proudia, it's recommended to consult with a qualified mechanic to diagnose and repair the problem.

2.3. 2001 models

The 2001 Mitsubishi Proudia was the last model year for this luxury sedan. While this model had some improvements over earlier models, it still had some common issues that owners experienced.

One of the most common issues with the 2001 Proudia was transmission problems. Owners reported that the automatic transmission would sometimes fail to shift smoothly, slip gears, or even fail completely. This issue was often caused by worn-out transmission components, a lack of regular maintenance, or insufficient fluid levels.

Another common issue with the 2001 Proudia was problems with the electrical system. Owners reported issues with the battery, alternator, and starter, as well as various sensors and control modules. These issues could cause a variety of symptoms, such as a no-start condition or warning lights on the dashboard.

The air conditioning system also continued to be a problem with the 2001 Proudia. Owners reported leaks in the system, as well as issues with the compressor and other components. These issues could result in reduced cooling performance or a complete failure of the air conditioning system.

Another issue that owners reported with the 2001 Proudia was problems with the suspension system. Some owners experienced a noisy suspension system, which could be caused by worn-out shocks or struts. Others reported issues with the front suspension, including broken ball joints or worn-out control arms.

Regular maintenance and inspections are important to keep the 2001 Proudia running smoothly and prevent issues from developing. It's important to perform regular transmission and electrical system maintenance, replace worn-out suspension components, and inspect the air conditioning system for leaks. If you're experiencing issues with your 2001 Proudia, it's recommended to consult with a qualified mechanic to diagnose and repair the problem.

3. Common issues by complectation

3.1. Proudia

The Mitsubishi Proudia is a luxury sedan that was produced in various complectations. While many of the issues were common across all complectations, some had their own specific issues.

The Proudia Type G, which was produced from 1991 to 1995, had common issues with the suspension system. Owners reported noisy suspension and problems with the front suspension components. The Type G also had issues with the air conditioning system, particularly with leaks in the system.

The Proudia Type S, which was produced from 1995 to 2001, had common issues with the transmission. Owners reported problems with the automatic transmission failing to shift smoothly or slipping gears. The Type S also had issues with the electrical system, particularly with the battery and starter.

The Proudia Type E, which was produced from 1995 to 2001, had common issues with the air conditioning system. Owners reported leaks in the system and issues with the compressor. The Type E also had issues with the suspension system, particularly with the front suspension components.

The Proudia Type F, which was produced from 1995 to 2001, had common issues with the electrical system. Owners reported issues with the battery, alternator, and starter. The Type F also had issues with the air conditioning system, particularly with leaks in the system.

The Proudia Type G DIAMANTE, which was produced from 1999 to 2001, had common issues with the electrical system. Owners reported problems with the battery, alternator, and starter. The Type G DIAMANTE also had issues with the air conditioning system, particularly with leaks in the system.

Regular maintenance and inspections are important to keep the Proudia running smoothly and prevent issues from developing. If you're experiencing issues with your Proudia, it's recommended to consult with a qualified mechanic to diagnose and repair the problem.

3.2. Proudia Grande

The Mitsubishi Proudia Grande is a luxury sedan that was produced in various complectations. While many of the issues were common across all complectations, some had their own specific issues.

The Proudia Grande Type E, which was produced from 2001 to 2003, had common issues with the transmission. Owners reported problems with the automatic transmission slipping or failing to shift smoothly. The Type E also had issues with the air conditioning system, particularly with the compressor and leaks in the system.

The Proudia Grande Type F, which was produced from 2001 to 2003, had common issues with the electrical system. Owners reported problems with the battery, alternator, and starter. The Type F also had issues with the air conditioning system, particularly with leaks in the system.

The Proudia Grande Type S, which was produced from 2001 to 2003, had common issues with the suspension system. Owners reported noisy suspension and problems with the front suspension components. The Type S also had issues with the air conditioning system, particularly with leaks in the system.

The Proudia Grande Type T, which was produced from 2001 to 2003, had common issues with the engine. Owners reported problems with engine overheating and oil leaks. The Type T also had issues with the air conditioning system, particularly with the compressor and leaks in the system.

Regular maintenance and inspections are important to keep the Proudia Grande running smoothly and prevent issues from developing. If you're experiencing issues with your Proudia Grande, it's recommended to consult with a qualified mechanic to diagnose and repair the problem.

3.3. Proudia Super Exceed

The Mitsubishi Proudia Super Exceed is a high-end sedan that was produced in various complectations. While many of the issues were common across all complectations, some had their own specific issues.

The Proudia Super Exceed Type E, which was produced from 1999 to 2001, had common issues with the air conditioning system. Owners reported problems with leaks in the system, particularly with the evaporator and condenser. The Type E also had issues with the suspension system, particularly with the front suspension components.

The Proudia Super Exceed Type F, which was produced from 1999 to 2001, had common issues with the transmission. Owners reported problems with the automatic transmission slipping or failing to shift smoothly. The Type F also had issues with the air conditioning system, particularly with leaks in the system.

The Proudia Super Exceed Type S, which was produced from 1999 to 2001, had common issues with the electrical system. Owners reported problems with the battery, alternator, and starter. The Type S also had issues with the air conditioning system, particularly with leaks in the system.

The Proudia Super Exceed Type T, which was produced from 1999 to 2001, had common issues with the engine. Owners reported problems with engine overheating and oil leaks. The Type T also had issues with the air conditioning system, particularly with the compressor and leaks in the system.

Regular maintenance and inspections are important to keep the Proudia Super Exceed running smoothly and prevent issues from developing. If you're experiencing issues with your Proudia Super Exceed, it's recommended to consult with a qualified mechanic to diagnose and repair the problem.

4. Common issues by engine type

4.1. 2.5-liter V6

The Mitsubishi Proudia was equipped with a 2.5-liter V6 engine, which was available in both gasoline and diesel variants. While this engine was generally reliable, there were some common issues reported by owners.

One common issue with the 2.5-liter V6 engine was related to the timing belt. Owners reported that the timing belt could wear out or break prematurely, which could cause damage to the engine. It's important to replace the timing belt according to the manufacturer's recommended schedule to prevent this issue.

Another issue with the 2.5-liter V6 engine was related to the fuel system. Owners reported problems with the fuel pump, fuel injectors, and fuel pressure regulator. These issues could cause a range of symptoms, such as rough idling, poor fuel economy, and engine misfires.

Owners of Proudia vehicles equipped with the 2.5-liter V6 engine also reported issues with the engine oil system. Some owners reported oil leaks from the valve cover gaskets or oil pan, while others reported problems with oil consumption. Regular oil changes and inspections can help prevent these issues from developing.

Finally, some owners of Proudia vehicles equipped with the 2.5-liter V6 engine reported issues with the transmission. Owners reported problems with slipping or failing to shift smoothly, particularly with the automatic transmission. Regular maintenance and inspections of the transmission can help prevent these issues from developing and prolong the life of the vehicle.

Overall, the 2.5-liter V6 engine is generally reliable, but regular maintenance and inspections are important to prevent common issues from developing. If you're experiencing issues with your Proudia's engine, it's recommended to consult with a qualified mechanic to diagnose and repair the problem.

4.2. 3.0-liter V6

The 3.0-liter V6 engine is the larger of the two engine options available in the Mitsubishi Proudia. This engine is known for its powerful performance and smooth operation, but it is not immune to certain common issues that owners may experience.

One common issue with the 3.0-liter V6 engine is oil leaks. This can occur due to various reasons, including worn gaskets, damaged oil seals, or cracked engine components. If left untreated, oil leaks can lead to a loss of oil pressure and potentially catastrophic engine failure. Regular inspection and maintenance of the engine's oil system can help prevent oil leaks and ensure proper engine performance.

Another issue that owners may experience with the 3.0-liter V6 engine is overheating. This can occur due to a variety of reasons, including a malfunctioning cooling system, a faulty thermostat, or a damaged water pump. Overheating can cause significant damage to the engine, including warped cylinder heads and blown head gaskets. Regular maintenance and inspection of the engine's cooling system can help prevent overheating and extend the engine's lifespan.

In addition, some owners have reported issues with the engine's timing belt. The timing belt is a critical component of the engine's operation, and if it fails, it can cause significant engine damage. Regular inspection and replacement of the timing belt as recommended by the manufacturer can help prevent this issue.

Overall, while the 3.0-liter V6 engine in the Mitsubishi Proudia is known for its reliability, owners should be aware of these common issues and take the necessary steps to prevent them through regular maintenance and inspection.

4.3. 2.0-liter inline-4

The Mitsubishi Proudia was also available with a 2.0-liter inline-4 engine, which was used in the earlier models. While this engine was relatively reliable, there were still some common issues that were reported by owners. One issue was related to the engine's timing belt. Over time, the timing belt could become worn or damaged, which could cause the engine to run poorly or even fail completely. It was recommended that the timing belt be replaced every 60,000 miles to prevent this issue from occurring.

Another common issue with the 2.0-liter engine was related to the engine's oil consumption. Some owners reported that their engines consumed oil at a faster rate than expected, which could lead to a drop in engine performance and even engine damage if not addressed. This issue was typically caused by worn piston rings, which allowed oil to leak into the combustion chamber and burn off. A rebuild or replacement of the engine was often necessary to resolve this issue.

Finally, some owners reported issues with the engine's fuel system, particularly with the fuel injectors. Over time, the fuel injectors could become clogged or fail, leading to poor engine performance, reduced fuel efficiency, and even engine damage if not addressed. It was recommended to have the fuel injectors cleaned or replaced regularly to prevent this issue from occurring.

Overall, while the 2.0-liter inline-4 engine in the Mitsubishi Proudia was relatively reliable, owners should be aware of these common issues and take appropriate steps to address them in order to maintain their vehicle's performance and reliability.

5. Conclusion

In conclusion, the Mitsubishi Proudia has been a popular luxury sedan in Japan, but like any car, it has its share of common issues. These problems can vary depending on the year range, complectation, and engine type. Some common issues with the Proudia include transmission problems, engine oil leaks, power steering leaks, electrical issues, and suspension problems. It is important for Proudia owners to regularly maintain their vehicles to prevent and address these issues as they arise. By staying on top of routine maintenance and promptly addressing any problems that arise, Proudia owners can ensure that their vehicles stay in top condition and provide them with a reliable and enjoyable driving experience.

Example List of Mitsubishi Proudia Engine Error Codes and Descriptions

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