Reviving a dead thread AGAIN because once again the above did NOT work. Well, after trying just about everything I had heard to eliminate the misfire and subsequent CEL, I finally decided to try the inevitable. I Replaced the aftermarket Perrin crank pulley with the stock pulley. As stupid and bizarre as it sounds, I finally got it this time. It's been almost 3 weeks and 3 tanks of gas with zero CEL's. I guess the RUMOR out there isnt really a RUMOR after all. Some cars with the lightened flywheel and lightened crank pulley will produce a misfire and a CEL.

So, you heard here as gospel. IT IS TRUE! Flywheel, pulley combinations can cause a CEL.

LD, this is for you. GO TO S&R for all your performance needs. (he told me this was the problem and if he was right I had to pimp S&R for him)

 

glad you finally figured it out. i kept getting that same CEL also when i had my suby. drove me insane. i did have a performance pulley system on it, that must has been the culprit

 

i had a misfire cel on mine but i didnt have to go through all this mine was the bolt that ho;ds the coil pack in place was about to fall out tightend it up and never had a misfire again