Ok I had a post the other day about my car stumbling and certain rpms. Well After completely removing the air cleaner it ran perfect so i figured that was it...the k&n was clogged. Well I cleaned it last night and put it back on today and it still stumbles at 1900-2500rpm but only when feathering the gas pedal at low speed. I thought well maybe the k&n still isnt clean so i bought a new puralotor filter and its not as bad now but it still does it. Take the thing off and it runs perfect....WTF?

 

The only conclusion I can come up with is that it's running rich with the air cleaner on?

That's not the normal problem with TBI, but I suppose if you've done the AFPR then it could be set too high?

Other than that, check the TPS. Maybe it's getting a bad reading? Or even check the base timing. If it's retarded too much I'll kinda do the same thing.

Good luck,
AJ

 

well I had a friend crank the car and i watched the injectors....cranked and didnt shoot fuel for a sec so I immediatly thought ignition module...I was right. Damn Im getting to good at figuring out whats wrong with my car. Shoot I used to waste all kinds of money replacing stuff

AJ...thats what i was thinking to...I was trying to figure out why it would need that much air. Its wierd that it didn't do it with the air cleaner off I still dont undertand that one. Oh well the module fixed it. Seems to start and run much better now to.

 

The ICM is at the base of the dist, right?

 

The ignition module (ICM??) is under the dist. cap.

 

Ignition Control Module...