Need Help with missfire on 94GT

[Orange66]

I need some wisdom and guidance on where to look next. I have a 94GT w/over 200thou on the clock.All stock except for a flowmaster after cat system. I am having a missfire at part throttle when the car is warmed up. I was having problems with a lean condition on bank1 and 2.The fuel pump,pressure reg,and fuel filters have been replaced.This cured the lean condition but then the missfire started. Only at partial throttle when cruising through a parking lot.Runs good cold,no problem on the freeway.No codes in the computer.Any help would be great."Sorry for the long post"

Dave

 

[Fopar]

needs plugs, possible wires cap and rotor...

 

[BlackVert]

+1

 

[Orange66]

Nope,has new plugs ,cap roter and wires. The missfire isn't consistant,comes and goes.

 

[94-302-vert]

Coil?

 

[dcs7941]

Hi Orange 66

I had this same problem 2 yrs ago. I had 185,00 Miles at the time and replaced plugs, wires, cap and rotor but none of this helped the problem. My problem was in the distributor. The ignitor or pick up coil is going bad. Some suggest rebuilding distributor but I replaced mine with the MSD 8455 and the car hasn't missed since and I currently have 213,000 miles. Just my opinion.