i have changed teh oxegyn sensors, maf sensor, optispark, fuel pump, computer tunes. and computer.
but i am still haveing a sputtering problem and my afr gauge shows its going lean when im having the problem. what could cause it to do this that i havnt changed yet?

 

clogged injectors? try running some seafoam through the tank. hows your fuel pressure? not enough fuel getting to it, so maybe theres a leak somewhere or something.

 

well i changed teh injectors too, still having the problem. for some reason my fuel pressure gauge stoppeed working so im not sure on the fuel pressure. but i only have teh problem after the car gets up to operating temperatures

 

icm or coil it sounds like.. sounds like the coil or icm is breaking down.. when they go bad or get old the particles breakdown in them when hot.

 

i have and msd coil on it that i put on not long ago, but how would one of those things make the car run lean?

 

well if the icm is breaking down then your car is going rough.. causing your car to have a misfire therefore reading lean and not really actually having a fuel problem.. had this happen on a 3.8 i worked on..

 

hook up a fuel pressure gauge and check for vacuum leaks (also post maf leaks)

 

well i switched my icm and coil with a friends and i still had the same problem, i also just replaced the manifold pressure sensor and the air temp sensor. i think i will be able to check the fuel pressure monday.