Question about 2003 Pontiac Grand Prix

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Acts as if its not getting gas slow about take off

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Believe it or not this car had problems with carbon deposits, Alot of times this car will have a dirty catalytic converter. I'm not 100% sure if it still is but this was at one time under recall. Also it wouldnt hurt to change out the fuel filter and air cleaner... Maybe even the spark plugs but believe me as a mechanic the rear 3 plugs are a ***** if you dont know what you are doing with that engine. Other then that i have seen 3800 motors with over 400k on them running strong. Make sure that lower intake gasket gets serviced if it is damp. GM makes a new one that is now aluminum instead of plastic.

Posted on Aug 23, 2010


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Car loses power with check engine light on

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