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Crazy "cold" exhaust tone...

This is a discussion on Crazy "cold" exhaust tone... within the Camaro / SS forums, part of the Vehicle Specific category; I initially wondered if it was the fuel pump, but it's definately coming from the exhaust... I present to you, ...

  1. #1
    Member 02SOMZ's Avatar
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    Sunset Orange Metallic
    2002 Z28

    Crazy "cold" exhaust tone...

    I initially wondered if it was the fuel pump, but it's definately coming from the exhaust...

    I present to you, my alien spaceship exhaust tone... WHAT is causing this? vibration frequencies??

    [ame]http://www.youtube.com/watch?v=9xPN7-xU1Ng[/ame]

  2. #2
    Just a slow Camaro KING Z28 HAWK's Avatar
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    Dam that's weird. I don't know what it is hopefully somebody does...

  3. #3
    Senior Member Too Fast's Avatar
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    Oh My God, it's the alien space ship sounds from "The Day the Earth Stood Still!" Run for cover everyone, we are doomed.

  4. #4
    Junior Member wildbanshee's Avatar
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    pewter
    2000 camaro

    i dont know dude but seriously that is pretty cool...if i heard you pull up to me sounding like that not sure i want to take you on...probably got one of those warp generators....heard they kill top end!

  5. #5
    Member c5z28's Avatar
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    On your ass flashing
    my highbeams

    [ame]http://www.youtube.com/watch?v=HAPky6F3ByU[/ame]

    Heard someones muffler who did this but only after it revved-it was a broken baffle in the muffler.

  6. #6
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    It sounds like it stopped as soon as you closed your door as well. Well, sounds like it time to get rid of that overrated Flowmaster and go with a loudmouth!

  7. #7
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    When does it do it? Cold? Hot?
    What mods?
    Info, info and more info!?

  8. #8
    King 0f n00bz shady milkman's Avatar
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    id guess a muffler issue..something is loose...........

    oops i see c5z28 already said that ^ what he said

  9. #9
    Member c5z28's Avatar
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    Quote Originally Posted by 9t8z28 View Post
    When does it do it? Cold? Hot?
    What mods?
    Info, info and more info!?
    It say's cold in the title
    Quote Originally Posted by shady milkman View Post
    id guess a muffler issue..something is loose...........

    oops i see c5z28 already said that ^ what he said
    The whoo whoo video kind of hides anything useful I might have said-although I wouldn't rule it out.

  10. #10
    Member 02SOMZ's Avatar
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    all stock... and only on first cold startup... goes away within a minute or two after driving... yeah I noticed the frequencies changing and then when I closed the door, poof gone... will experiment later by banging doors again... LOL

  11. #11
    Member c5z28's Avatar
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    More than likely a hole in the exhaust somewhere and as it warms up the hole closes.

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    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    Mileage on the car?

    Stock muffler?

  13. #13
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    Let the thread starter comment.
    Quote Originally Posted by c5z28 View Post
    It say's cold in the title


    The whoo whoo video kind of hides anything useful I might have said-although I wouldn't rule it out.

  14. #14
    Junior Member mcnoskyimages's Avatar
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    I would not rule out a pin hole somewhere but it sounds mechanical. I didnt hear you shut your door but it did change after you hit the gas. To me that seems like it was going into closed loop idle. Which means my $ is on the air pump/smog system.

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    Four Seat Vette 10spokess's Avatar
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    I have this same issue in my car it freaks me out

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    Senior Member Too Fast's Avatar
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    Quote Originally Posted by mcnoskyimages View Post
    I would not rule out a pin hole somewhere but it sounds mechanical. I didnt hear you shut your door but it did change after you hit the gas. To me that seems like it was going into closed loop idle. Which means my $ is on the air pump/smog system.
    Quote Originally Posted by 10spokess View Post
    I have this same issue in my car it freaks me out
    It sure could be the air pump. It only runs for a couple minutes on cold start up. Pull the air pump fuse, I believe it's under the hood, and try again. That will probably set a code, but at least it will confirm/deny the cause.

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    Four Seat Vette 10spokess's Avatar
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    Quote Originally Posted by Too Fast View Post
    It sure could be the air pump. It only runs for a couple minutes on cold start up. Pull the air pump fuse, I believe it's under the hood, and try again. That will probably set a code, but at least it will confirm/deny the cause.
    The air pump was the problem how do we fix that!!! or should it just be replaced

  18. #18
    Your dealership guy konigandy6's Avatar
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    Quote Originally Posted by 10spokess View Post
    The air pump was the problem how do we fix that!!! or should it just be replaced
    Get the AIR and EGR tuned out and then just rip all of it out of your car.

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    Four Seat Vette 10spokess's Avatar
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    Quote Originally Posted by konigandy6 View Post
    Get the AIR and EGR tuned out and then just rip all of it out of your car.
    seriously???

  20. #20
    King 0f n00bz shady milkman's Avatar
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    Quote Originally Posted by 10spokess View Post
    seriously???
    yup..that stuff is pointless

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