Thread: annoying thumping sound at firewall idling in gear

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  1. #1 Re: annoying thumping sound at firewall idling in gear 
    GrandPrix Junkie
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    Maybe get it in the air and start banging around on the exhaust system at random points and see if you hear it rattling against something. Could just be a hanger or muffler slightly out of place and hitting on suspension or something.
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  2. #2 Re: annoying thumping sound at firewall idling in gear 
    SE Level Member teejay's Avatar
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    I guess I'll get the ole pry bar and hammer out and start moving things and see if it stops.

    02,160,000 miles, was silver, painted it black after tornado totaled it,that did'nt take much. American Racing wheels,aluminum grills,Stinger Fiberglass hood,drivetrain stock.
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  3. #3 Re: annoying thumping sound at firewall idling in gear 
    SE Level Member teejay's Avatar
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    I found it but I don't know how to fix it. Right where the exhaust pipe bolts up to the manifold its knocking inside that cone around the pipe, looks like theres a spring in it or something, not sure.I guess I'll pull it down and see what it looks like.

    02,160,000 miles, was silver, painted it black after tornado totaled it,that did'nt take much. American Racing wheels,aluminum grills,Stinger Fiberglass hood,drivetrain stock.
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