Good Evening,

My check engine light has been on for quite sometime.. I was hoping maybe somebody on the forum can give me a few pointers on what to look for. Even though the light is on, the car is running better then new it has a ton of power and seems to drive normally.

All parts below where replaced. Some more than one time:
All four oxygen sensors (one was coding - failed - and was replaced a second time)
PCM (first replacement - reprogrammed twice, due to car would shake intermittently stopping at the stop light. Then replaced again due to check engine light)
both catalytic converters
Flow Valve

Other Parts:
pcv valve

Any ideas would be greatly appreciated!