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HELP:funny noise from exhaust before warm up

This is a discussion on HELP:funny noise from exhaust before warm up within the External Engine forums, part of the LSx Technical Help Section category; Hi all, I got a 00 vert M6, all stock. I'm getting a loud noise (almost as if there's a ...

  1. #1
    stupid snow! DOCJHH45's Avatar
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    00 TA m6 vert

    Unhappy HELP:funny noise from exhaust before warm up

    Hi all,

    I got a 00 vert M6, all stock. I'm getting a loud noise (almost as if there's a hole in a muffler) from the exhaust whenever I clutch between gears, but it goes away once the car reaches normal operating temp.

    Anyone have any ideas what this may be, or experience it as well???

    I was thinking cats... but i'm not sure.

    Thanks for all your help

  2. #2
    stupid snow! DOCJHH45's Avatar
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    pewter
    00 TA m6 vert

    bump...

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    Senior Member TransAm11973's Avatar
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    2000 Trans Am WS6

    well first off where in the exhaust line is it coming from?? engine end or cat back end?

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    Member Speed Psychosis's Avatar
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    Red
    98 T/A M6 w/lid and LM1

    are any exhaust parts bolted on instead of welded? Maybe when they are colder there is a hole and then when they warm up they expand to fill the hole.

  5. #5
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    There is probably some part of the exhaust loose. Your gonna have to get under it and find it.

  6. #6
    Freezin in AK! ArcticZ06's Avatar
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    Old: 00 WS6, 02 Z06, 79TA
    11 F350 CC 6.7L

    i get some slight backfire rumbles before my car warms up when i switch between gears. Is that what you're hearing maybe?

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