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Thread: Aircon squealy noises

  1. #1
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    Default Aircon squealy noises

    When I start the car and bring the revs up a little, the aircon stuff gets a bit squealy for a short time then goes quiet. This is without the aircon turned on so it can't be the internals of the compressor (not moving) neither is the belt loaded very much so I don't expect it is slipping. Which is most likely to fail, the compressor pulley bearing or the tensioner pulley bearing? Tensioner is easy to replace, compressor not so sure. 5 litre so has V belt.

  2. #2
    Not_An_Abba_Fan's Avatar
    Not_An_Abba_Fan is offline Exhaust Guru
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    If the belt is old it will squeal. If the V part has a slightly glazed appearance, it will be causing the squeal. Fit a new belt.
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    Quote Originally Posted by DannyboyDS View Post
    I burnt my hand in a nasty way once using method one but thats because i'm a twat.

  3. #3
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    Just put new belt on on Saturday. None was fitted when I got the car so previous owner must have "fixed" the problem.

    How tight do they have to be?

  4. #4
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    If the belt was off then there is most likely a problem with the compressor or clutch.

    It has to be fairly tight, about 20mm up and down movement on the belt over it's longest part.
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    Quote Originally Posted by DannyboyDS View Post
    I burnt my hand in a nasty way once using method one but thats because i'm a twat.

  5. #5
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    Tight now. No more squeals.

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