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Funny exhaust sound

This is a discussion on Funny exhaust sound within the External Engine forums, part of the LSx Technical Help Section category; Ok, ive posted about this problem several times with no responses, but ive finally got it narrowed down. something is ...

  1. #1
    James Bond Spikito's Avatar
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    2001 3.8 Black - sold
    2000 SS Black M6

    Funny exhaust sound

    Ok, ive posted about this problem several times with no responses, but ive finally got it narrowed down.

    something is wrong with my exhaust, but basically, on random occasions, my exhaust gets really loud, i have a pinhole on the inlet side of my muffler, other than that its good.

    it sometimes makes this really loud resonating sound when im cruising uphill at about 3k in 3rd, once it starts, it keeps donig it everytime i hit the gas, but only under strain at certain RPM's

    tonight i was sitting at a redlight and it started and just kept going, as soon as i pulled away it stopped.

    so my question is. is it more than likely something external, like a heat shield, or rubbing. or internal, like a broken baffle, resonator, or cat.

  2. #2
    Life in the Fast lane sunsetorangess's Avatar
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    Met. Sunset Orange
    01 SS

    What exhaust are you running? Any sound clips?
    Can you describe the sound?
    J
    2001 SS, Its not the car its the Driver that matters....

  3. #3
    Senior Member GULLETT17's Avatar
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    00 TA PWTR, 98 VertTA NBM
    80 TA BLK, 80 Formula NBM

    my magnaflow catback will rattle, i guess you would say, against the panhard bar at certain rpms. also at about 2500 rpm i have another rattle i cant find. . .but sounds like a heat shield.

  4. #4
    James Bond Spikito's Avatar
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    2001 3.8 Black - sold
    2000 SS Black M6

    i have stock exhaust. but its a loud droning sound, its hard to get sound clips, cuz it only happens when im driving, but ill try. sometimes when im stopped it will rattle, i cant tell if its coming from the same place. but today i was parked and it started rattling so i jumped out real quick, and it was my muffler up against something. i pushed down on my tail pipe and it stopped.

    but like i say, i dont know if thats the source of the driving drone.

  5. #5
    Member NavdeepWS6's Avatar
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    Black
    2002 Trans Am

    i have a rattling sound too on my stock exhaust but its just my tunnel brace or somthing cant remember but is bent and touching the pipes from speed bumps

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