Thread: My 2004 grand prix power jumps in and out 3500+ rpm

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  1. #1 My 2004 grand prix power jumps in and out 3500+ rpm 
    jay1881
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    Default 03-16-2012
    My 2004 grand prix power jumps in and out 3500+ rpm... Its almost like a tranny slip ( grab slip grab slip) but it is definitely the engine because i can hear it in the exaust... any thoughts?.... plugs are good, cables good, mass air good... ugh
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  2. #2 Re: My 2004 grand prix power jumps in and out 3500+ rpm 
    SlowNA06
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    Default 03-16-2012
    Vacuum leak. Check the Rubber T off the LIM.
    Irridium spark plugs last 100k mi and work just as well as copper. Copper is a waste on N/A and only lasts 15k mi. Don't use Platinum.
    Use 195* tstat unless you can thoroughly explain why not; 99.9% don't need a lower temp.
    Almost any oil filter, ever, is of higher quality than ACDelco. Spend $6+.
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