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AC squeal

This is a discussion on AC squeal within the General Help forums, part of the LSx Technical Help Section category; It's not a belt, but it does kind of sound like one. It gets somewhat better with the AC off ...

  1. #1
    10 year lurker DrMilhouse's Avatar
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    AC squeal

    It's not a belt, but it does kind of sound like one.

    It gets somewhat better with the AC off (or on, I don't remember, but it does change a very small amount). I've just removed the belt and called it good since it's been cold, but it'll be warm again soon.

    What has been replaced in an attempt to make it go away:

    The belt
    The tensioner
    The tensioner pulley
    The idler pulley

    The belt is plenty tight.

    Belt dressing will change it for a short time, but not long.

    I'm dreading replacing the compressor. I don't think that it would really need that, or would it? The compressor is the only thing left, but what I've found is that there is a replaceable bearing that is part of the AC Clutch.

    There are 3 different bearings and it depends on the compressor that you have.

    Anyone know of how I can find out which compressor it is and... is the bearing a solution?

  2. #2
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    pajeff02's Avatar
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    If belt dressing makes the noise go away it is probably the belt or tensioner. The tensioner may not be putting enough pressure on the belt and it will slip and squeal. I have had belts that just squeal -- replaced them with a different brand and the noise was gone.

  3. #3
    Impounded
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    Im in the same boat as you except mine goes GR RG RG RGR GR GRGR GR GRG RGR GRGR.

  4. #4
    Member gbd99ws6's Avatar
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    1999 T/A WS6 A4

    Might want to try a different brand of belt. Had the same problem tried all the same things you did, ended up getting a different brand of belt and it shut up.

  5. #5
    Awaiting Activation lovedrvr's Avatar
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    had the same problem,then saw metal shavings on the belt
    its the clutch,mine stopped and still works fine
    but i have a whole new system waiting in the garage,paid $240 for new comp,filter,drier cans and oil,and o-ring kit

  6. #6
    Impounded
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    Quote Originally Posted by lovedrvr View Post
    had the same problem,then saw metal shavings on the belt
    its the clutch,mine stopped and still works fine
    but i have a whole new system waiting in the garage,paid $240 for new comp,filter,drier cans and oil,and o-ring kit
    Where did you get this deal at???

    I just priced mine with my dads discounts at the stealership... 700 bucks for all of this...

  7. #7
    Awaiting Activation lovedrvr's Avatar
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  8. #8
    Impounded
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    Quote Originally Posted by lovedrvr View Post
    Holy shit! You are the man!

  9. #9
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
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    Gatorback belts are the best out there to stop belt noise. Give it a shot.

  10. #10
    10 year lurker DrMilhouse's Avatar
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    I put on a gator belt. It didn't squeal for a while, but it's been two weeks and now it's starting to squeal again.

    I dunno what to think...

    help?

  11. #11
    Moderator Cutlass's Avatar
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    did you try spinning the pulleys for the compressor, idler, and tensioner while you had it apart? How'd they feel?

  12. #12
    Senior Member doberman 152's Avatar
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    Quote Originally Posted by lovedrvr View Post
    Nice find got to get me a new compressor soon.

  13. #13
    10 year lurker DrMilhouse's Avatar
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    Quote Originally Posted by Cutlass View Post
    did you try spinning the pulleys for the compressor, idler, and tensioner while you had it apart? How'd they feel?
    they all spun free handed. They felt like they were rotating smoothly (no catches when spinning around).

  14. #14
    Moderator Cutlass's Avatar
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    stock pulleys right? I'm thinking something must be misaligned, bent, or loose.

  15. #15
    2001 ws6 6-speed david_viny's Avatar
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    Er mine did this too. On real cold days it would make a squeaking noise at every rpm and eventually go away. But on normal days it wouldn't start to make noise until like 4,000+ rpm, and it wasn't just a squeal at that rpm. It sounded like piston slap or something internally wrong with the engine, pretty disturbing. I questioned the AC pullys for the cold weather squeaking and took the belt off. Surprise, no weird sounds anymore, even the high rpm ones! I swear the engine is more responsive too but who knows.

    So yea I'm no help here lol. But from the sound I heard at high rpm's, I'd have to think its from something relating to the compressor.
    Last edited by david_viny; 05-31-2009 at 12:23 AM. Reason: Spelling...

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