I have a 88 with a 2.3ltr and it starts fine and runs fine between 1400-3200rpm. When it warms up it stutters about every forth revolution?? I've changed the wires to Accel superstock, put in a new MSD blaster 2 coil, cleaned the injectors and throttle plate and still it does it. My old school mechanic sugeested the idle air control valve but will this do anything for the upper end rpm. Any suggestions besides the compactor are gladly accepted.

 

Maybe bad dist. cap

 

Cap and roter are new. Still same problem

 

No check engine light??? need to have it scanned and check sensor for working peramitors (cant spell)

 

Scanned the vehicle about two months ago and the onlly code that registered was " was unable to controll and maintain Idle. (can't type). And oddly enough never a check engine light?

 

Need to scan sensors check if they are working correctly.

 

did you check all your spark plugs?