Car revvs up, not accelerating

Asked by Oct 08, 2012 at 05:33 PM about the 2000 Chevrolet Cavalier

Question type: Maintenance & Repair

2000 Cavalier 2.2L 4speed auto.
Bare with me please, I am in no way a mechanic.
Car idles fine. While driving the car will intermediately stop accelerating, even though it continues to rev if Im on the gas. Then all of a sudden it will shoot forward. Does this over and over. The "non-acceleration period" only lasts for a couple seconds.. then It drives fine for about a minute, then back to nothing.
My very limited mechanical knowledge tells me this is the tranny slipping but like I said I am not a mechanic.
I did notice that the speedo and odometer stop working during the periods on non-acceleration and the fluid does not smell burnt and is still a pinkish / red color.
Any thoughts are helpful..

2 Answers

33,355

Sounds like the trans is slipping due to an issue with the PCM. Odd that the spedo quits. Take it to a few trans shops to get multiple opinions.

17,925

Take it to a shop. Sounds like something electrical like John said maybe pcm. I know the trans uses the speed sensor to determine what gear to be in. Maybe something is loose or shorting. Or bad pcm. Dont let someone talk you into a new trans without reasonable evidence. Like finding chunks of metal in the oil pan.

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