Thread: 2000 Grand Prix won't shift under hard acceleration

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  1. #1 2000 Grand Prix won't shift under hard acceleration 
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    3.1 Runs nicely most of the time but when you stomp on it the RPMs just climb and it won't shift into next gear.

    No engine codes. ANy thoughts?
    Last edited by pbob42; 01-07-2014 at 12:36 PM.
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  2. #2 Re: 2000 Grand Prix won't shift under hard acceleration 
    Modded for Maximum Slow burgundybullet's Avatar
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    My only guess is that this is a transmission issue. Does it feel like its in neutral kind of?


    1978 Oldmobile Cutlass Cruiser (crushed)
    2000 Grand Prix GT (Revived DD)
    2001 Grand Prix GTP Special Edition (Weekend Warrior)
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  3. #3 Re: 2000 Grand Prix won't shift under hard acceleration 
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    No - it is like it gets in gear and won't shift up, just whine up and red line. If you take your foot off the gas then it will shift.
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  4. #4 Re: 2000 Grand Prix won't shift under hard acceleration 
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    Had the same exact problem, I ended up having a clogged cat. Eventually it got to the point where even lifting my foot off the gas and putting it back on wouldn't cause it to shift.
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  5. #5 Re: 2000 Grand Prix won't shift under hard acceleration 
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    just put a cat in it 6 months ago
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