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  • [Corsa C 2000-2006] Air con bearing noise.

    I've got bearing noise from my air con unit, its not constant just now and again, when I switch on the AC it disappears.
    I never use the AC anyway, so I guess if the noise gets worse, I could disconnect the unit by fitting a non AC belt.
    Is this common, have any guys done this before ?

  • #2
    You said it disappears when you switch the ac on. Sure you don't mean off?

    Had a few make noise when ac is on,, not the other way round
    1972 Viva restoration thread - http://www.thecorsa.co.uk/projects-b....html#post1534

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    • #3
      The noise, its a slight knocking vibration sound , only occurs now and again and only when idling, when you switch the A/C on it goes away, or increase the revs slightly. Thing is my RPM on idle is around 600, if only I could increase it to 800, I would never hear it !

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      • #4
        Ok, got what you mean now. Are you sure the noise is from the ac compressor?

        If it's an idle issue switching the ac on will raise the rpm slightly which resolves whatever is causing the noise. 600 is too low so I'd look at the idle control and throttle body. Can't see which engine / year it is?
        1972 Viva restoration thread - http://www.thecorsa.co.uk/projects-b....html#post1534

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        • #5
          Engine is a 2004, 1.2 Twinport, the noise is defitnetley coming from the pulley area, when you put pressure on the alternator it vibration goes.
          Originally thought it might be the alternator bearing, so put another one, (No change) Fitted another tensioner, (No change).
          I have come to the conclusion it must be the bearing / clutch pulley on the A/C pump and as I never use the A/C, I could disconnect the unit by fitting a Non A/C drive belt.
          When I say tick over at 600, is more like 750, but if you increase RPM to 800 the vibration goes, never hear it on the move, only on tickover and not all the time.

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          • #6
            Personally I'd do what you've suggested and fit a non ac belt. It's been done plenty of times.
            1972 Viva restoration thread - http://www.thecorsa.co.uk/projects-b....html#post1534

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            • #7
              Cheers Taurus, just need the nod off somebody in the know ! Thanks..

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