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1990 chevy cavalier stalls and has no power under acceleration


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the bandit
New User

Jan 8, 2011, 2:26 PM

Post #1 of 2 (3348 views)
post icon 1990 chevy cavalier stalls and has no power under acceleration Sign In

Crazy ok first I want to thank you all for your help, I have a 1990 chevrolet cavalier, it ran great untill the fall, I started having problems with hesitation when aceleration, it would happen every once in a while, as the weather got colder it started getting worse, and got to a point that if you started it up when it was cold and tryed to go anywhere you couldnt, it would stall or just have so bad of a hesitation that you couldnt go, you could have the pedal to the floor and no responce it would just buck and spit and not go, it would do it for a few seconds then catch up and drive fine, but everytime you came to a stop and tryed to go again it would do it again, then the problem progressed into the same thing but now its once the engine warms up, you can start it and drive if for a few min and its fine, then it acts up, stalls when you come to a stop of let off the gas to slow down, when it doesent stall it hesitates so bad you cant rev the motor up, it will continue to act this way for a while, then once the engine is completely warm it seems to clear up and run ok again, this is crazy, this car has become very unreliable to the fact that I cant drive it to work and I work down the road from where I live. I have tested everything I could, and replaced alot of parts, the motor is a 2.2, I have replaced the engine coolant temp sensor, throttle position sensor, thermostat, plugs, wires, ignition module, ign coils, fuel filter, fuel pump. the o2 sensor was replaced last summer, I tested the map sensor with a dvom and tests good, the transmission tcc sensore was replaced last year aswell, it has this problem during warm up both under load while its being driven, and just idleing, doesent make a difference, at one point it stalled when I was letting it warm up and it wouldnt start for a few hours, I have no idea what else it could be and Iam getting to the point where I might just sell the car and get something else just because I cant figure this out, and I dont know how often I can continue to borrow my neighbors car to get to work. please if you all have any suggestions or help to solve this problem, that would be so great. thank you and if I left anything out I will add to it. thank u


Nathan47
Novice
Nathan47 profile image

Jan 11, 2011, 9:11 PM

Post #2 of 2 (3336 views)
Re: 1990 chevy cavalier stalls and has no power under acceleration Sign In

Have you tried the idle air control valve yet? I have seen those go out on a cavalier before and cause them to buck like crazy.






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