Could this be the transmission clutch solenoid?
35

Asked by SCHOENEC Jul 24, 2012 at 01:19 PM about the 1999 Pontiac Grand Prix 2 Dr GTP Supercharged Coupe

Question type: Maintenance & Repair

Run car at low rpms and right when it shifts into overdrive rpms bounce up and down about 500 rpms, i am not getting engine code and only code i got was for MAF sensor replaced that and that was not the problem!

3 Answers
5,095

Rucko answered 11 years ago

the tranny shouldn't shift into overdrive until the car is going over 60 mph,sounds like its time for a rebuild.

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35

SCHOENEC answered 11 years ago

Well idk cuz it shifts smooth and doesnt slip or anything. Also it shifts into overdrive around 50 55 i meant when im running low rpms by not accerating heavy and hit bout 50 is when the rpms bounce, do u know of anything else it could b? Mayb tranny fluid and filter change, fluid looks good?

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30

wade07 answered 8 years ago

what did you find out was the problem. my 2006 grand pric gt supercharged is doing the exact same thing.

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