Question about 1999 Pontiac Grand Am GT

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99 pontiac gran am 2.4L

It has a tappin sound when idling but when it hits a thousand rpm it stops
i can feel it in the steering wheel an the brake pedal when its cold its quite
asnit warms up it starts up again i was thinking timing chain slack adjuster
or maybe oil pump like for your input of what u think it could be

thank you
kenny

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  • tabaker Aug 22, 2008

    only 70k on motor an it sat for about 1.5 years changed oil bout didnt help

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It will be the oil pump its probably clogged

Posted on Aug 22, 2008

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