Question about Pontiac Grand Prix
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Posted on Jan 02, 2017
I would start with a belt. While removing it feel how much tension the tensioner has on it, on the 3800 egnine they have a stiff tensioner(sorry I don't have any specs for how much) After you get the belt off you can look at all of the pulleys and spin them to see if the bind or look for stuff stuck in the grooves on the pulleys.
It sounds to me like the belt is streched. I would not recommend one of those gator back belts, they seem to make more noise sooner than a good v notch belt. But thats just my opinion!
Posted on Oct 25, 2009
Take your car to a dealer and tell them to "clean the throttle body" Known problem for this year. It will solve your issue.
Posted on Dec 30, 2009
The PO300 code is random/multiple cylinder misfire detected. Sinsc you have the code PO302, that means that cylinder 2 is the one misfiring, usually a bad coil pack, or spark plug.
Posted on May 12, 2010
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