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2000 Pontiac Montana Question: accelerates when i am not giving it gas!

 

Question

Visitor, Kimberly, WI, April 05, 2010, 17:29

Several times now when I am driving I will not be have my foot on the accelerator and the van is accelerating all by itself. It will take off, my RPM's will go up, and will auto accel even when driving on an incline. The RPM's shot up when I put the van in park. There is no check engine light on, and I do not use coast or set accel. What the heck is wrong?? Has anyone else come across this issue? If I turn the van off and let it sit for a while and than restart, it seems to drive ok.

4 Answers
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  • Medium-star Best Answer
    M_Kast April 05, 2010, 21:56
     Journeyman

    Here is a short list of some things that may be causing the problem:
    1.) The TPS (Throttle Position Sensor) is malfunctioning
    2.)The FPR (Fuel Pressure Regulator) is malfunctioning
    3.) There may be a vacuum leak. Try having your intake gasket checked for cracks

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  • Answer #2

    autopilot minivan July 06, 2010, 18:35
     Rookie

    YES! It's happening to me also with my 2001 minivan. I've taken it to a mechanic that says it might be the throttle sensor, but of course, it only does it intermittently - not when the mechanic is driving it! Have you found an answer to yours yet?

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  • Answer #3

    Visitor, July 09, 2010, 06:29

    I had the same problem. Haven't had it looked at yet. Mine is stuck in acceleration mode so can't drive it.

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  • Answer #4

    Visitor, August 03, 2010, 15:31

    I have a 2003 and I'm having the same issue. Noticing a trend with this style from G.M. My van will reach 90 KM/H without touching the accelerator. How can you check TPS

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