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Odd sound from under the hood

This is a discussion on Odd sound from under the hood within the General Help forums, part of the LSx Technical Help Section category; My car makes a very odd whining sound under the hood that increases or decreases in pitch depending on engine ...

  1. #1
    USS Camaro SailorZ28's Avatar
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    1999 Camaro Z28 M6

    Odd sound from under the hood

    My car makes a very odd whining sound under the hood that increases or decreases in pitch depending on engine rpm. It does it at all speeds and at idle. I can't figure out what might be causing it. I intend to sell the car soon and I am worried that I am about to encounter a catastrophic mechanical failure. The sound is similar to a power steering pump going bad, but it isn't the pump because the sound doesn't change if I steer, it's strictly RPM based.

    Thanks.

  2. #2
    Senior Member OnEbAdReDSS's Avatar
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    2000 Camaro SS # 5,876

    sounds like the PS pulley... could be going out... i mean the bearing

  3. #3
    Senior Member bigrondownhiller's Avatar
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    1996 Camaro Z28 vert

    Could be the belt or belt tensioner.

  4. #4
    Navy Blue Metallic SS 01NBMSS's Avatar
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    Navy Blue Metalic
    2001 Camaro SS

    probably the belt...if not then try the tensioner....it could also be the alternator pulley

  5. #5
    Veteran Hi-Po's Avatar
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    1999 TA WS.6

    Its gonna be in the accessory drive belt area 9 times outta 10.

  6. #6
    Impounded
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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Mine started doing this a couple of nights ago. Sounds like a damn procharger or something.

  7. #7
    USS Camaro SailorZ28's Avatar
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    1999 Camaro Z28 M6

    Yep, mine sounds like it's supercharged too, just minus the extra power

  8. #8
    Member slikws6's Avatar
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    1998 WS6 Convert

    Mine does it 2 but seems to do it more when its cold.

  9. #9
    Impounded
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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Quote Originally Posted by slikws6 View Post
    Mine does it 2 but seems to do it more when its cold.
    Yeah I listened for it all last night. Piston Slap is getting pretty horrible as well as more noises. Damn 20 degree weather. Mine goes away when its warm.

  10. #10
    We'll be back... GatorSS's Avatar
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    2000 Camaro SS M6

    Most likely a belt. Change both of them.

  11. #11
    - STOCK ish - Sarge91's Avatar
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    2002 Camaro SS SLP

    Mine does it more when i turn, so is it my pump for me?

    Should i try getting it flushed?

    Ty
    2002 Camaro SS A4 - SLP# 2951 l MS4 l LT's w/ORY l F.A.S.T 78 & TB l Borla l Cutout l CME l TCI 3500 l 3.23's l !emissions l !sway

  12. #12
    Member bryceslu's Avatar
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    00 NHRA Formula

    hhmm..mine does the same high pitch whine...both belts were supposedly replaced recently though?
    Anything else to consider...doesnt bother me but if something is on the way out I would like to have a heads up.
    Thanks

  13. #13
    Impounded
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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    All my belts, pulleys and idlers have been changed. Always had the sound.

    I live with it. just like my SES light.. lol

  14. #14
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    2003 KB Mustang

    ya dont have a kenne bell under the hood do ya?....then dont sell the car....lol

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