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Pontiac Repair/Engine light/Electric fan


Todd, I wanted to take one more whack at this because I didnt give complete info before. While driving, engine light came on, engine began to run rough. I noticed after a couple days parked, that when I turn the key to "on" the electric fan is running, in which case the engine barely wants to run. Other times the fan is not on when starting and it runs fine. I was able to keep the car running a couple of times while fan was on, when the fan shut off, the engine went right back to purring like a kitten. All this took place with everything off, ac, heat etc. At no time did I see the AC comp kick in. I replaced the coolant temp sensor, with no favorable results. Scratching my head here. Thanks for looking again.
92 Firebird 3.1 V6


from what you just described to me it may have a bad engine control module (ECM) you also said it will not flash codes too correct? if for some reason the engine control module is in some sort of a failed state it will ground all the solenoids and relays and that is why the fan is running? With out seeing it I can't tell you for sure. there has to be a parts store around you that has a code reader for an OBD car. I know there are far and few between everything from 1996 and up is OBD II.

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Todd Puccio


General auto repair,electrical issues,driveability issues,anti-lock brakes,SIR systems,HVAC,engine performance,Gm specific. I have worked at my current dealership since the 1990 model year anything much older than that I have limited exposure to. I do not have very much transmission experience so those question you may want to ask of another expert. When you send me a question let me know the exact make/model/engine and year for the car or suv you have it makes it easier to answer the questions that way. If your happy with the answer I gave you please feel free to Donate. This is a free service to you and I am not compensated at all by this web site. I have 22 years of experience to share with you and my knowledge wasn't free to me. I had to pay for my education.


Experience in the area: I have been a technician in GM dealerships for over 22 years and I am a ASE master technician. I work at a Buick and GMC truck store Previously I worked at a Pontiac GMC store for 18 years. I Served a a lead technician when dealership was on a team system. I just recently moved to a Buick,Hummer,Saab Store when my franchise was purchased by this dealership. Organizations: ASE master technician


Education/Credentials:High school diploma,2 year vocational school degree 2 year college degree. Associates degree in applied sciences (auto technology)Awards and Honors: GMC master technician

Awards and Honors
Master GMC truck technician Master ASE technician in 9 categories

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