well i was having a problem after the car warmed up/fans turned on, i would lose idle; down to around 3-400rpm and the car sounding like it was gonna die and after you gas it a bit it would spit, sputter, and sound like it was boggin and then clear up around 1500-2000rpm...at that time it was throwing a knock sensor code, opti resolution code and an air code...so the car had around 138K on it so i decided to replace a few things...deleted the a.i.r. out and kept a good fuse, replaced the opti, water pump, knock sensor, msd wires, fuel filter and cleaned the MAF with the crc maf cleaner...the plugs and both o2 sensors were replaced about 250 miles prior to all of this....got everything back together and seems to be doing the exact same thing...car runs decent till it warms up and then back to ****...the car is pretty much stock with the "chokemaster" catback and a mac ypipe (!cat)...my next step was to replace the coil and control module but wanted to get some input first...tried searching a few ol threads in the graveyard and didnt come with anything...thanks in advance

for the record the car is:
1994 z28/a4
flowmaster catback
mac ypipe with no cat

 

try the ICM and the spacer mod on shbox.com

 

ive thought about trying that but thought the spacer mod only worked on the 96-97 cars?? i may try it anyways cause its easy and free

 

I don't see how the spacer mod would be just for 96-97, they're all mounted flush to the head. Which is silly since it is a part that needs cooling (hence having the heatsink). When they were inside the distributor they came with thermal grease to help give it contact with the bottom of the distributor, which then would act as the heatsink in a manner of speaking.

Doubt I needed it, but I spaced mine out, as did my friend on his 94 Vette. Heat kills electronics, so if anything it'll make it last longer.

 

i understand that but like i said ive read so many thread over the weekend that i may think i read something but really didnt...anyways, update on the car, went out to let it run for a while, ses light came on and bogged the car completely down...forgot to mention that i just finished installed all of the parts today...i guess now ill buy and new coil and module, and some 1/2" spacers and see if that helps...

 

Don't drop money on it yet, see what the code is!

 

try a fuel pressure guage

 

i planned on replacing them anyways and for what my price is on them its one less thing to factor in...i plan on scanning it today to see what i can figure out