98 galant es
 

i have a 98 galant es. i have a serious issue. i read a code that said po100. which is the maf sensor. i changed the maf and the map. cleaned the throttle body good and still the code is on. some have said that the main relay could be out still giving me that code? my question is could that be the reason why my check engine light stays on? if not tell me what else