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Thread: Air Con Question

  1. #21
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    Vehicle : Vectra C

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    Engine : 1.8

    Year : 2007

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    So I should check it when the plug is attached to the compressor? And check earth continuity?



    Quote Originally Posted by Critch View Post
    Voltage at a disconnected plug means nothing as current isn't flowing

  2. #22
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    Vehicle : Vectra C

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    It looks tired

    comp1.jpgcomp2.jpg

  3. #23
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    Woud be tricky taking the pulley off the compressor with out removing the whole unit. Suggest apply 12v to the black plug terminals and see if you can hear the clutch click. If not then clutch is siezed (happens if not used). AFAIK this would then mean needing a replacement compressor.

    Getting the compressor replaced you need to have the refigerant pumped out, then take off compressor, test replacement's clutch action, refit, with new seals on HP and LP connections. Then get it vac pumped for an hour to remove moisture. Then regas, test etc.

    Then chill out.

    PS I'd get a new Aux belt on there too while you are at it, looks a bit creaky. :-)

    Mine separated and went a few months after I bought the car from a a stealer, into the crank pully, slipped the timing out and £1200 engine repair bill.

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  5. #24
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    Thanks IainVec I agree the belt needs replacing will address that too ill probable change water pump while I'm at it




    Quote Originally Posted by IainVeC View Post
    Woud be tricky taking the pulley off the compressor with out removing the whole unit. Suggest apply 12v to the black plug terminals and see if you can hear the clutch click. If not then clutch is siezed (happens if not used). AFAIK this would then mean needing a replacement compressor.

    Getting the compressor replaced you need to have the refigerant pumped out, then take off compressor, test replacement's clutch action, refit, with new seals on HP and LP connections. Then get it vac pumped for an hour to remove moisture. Then regas, test etc.

    Then chill out.

    PS I'd get a new Aux belt on there too while you are at it, looks a bit creaky. :-)

    Mine separated and went a few months after I bought the car from a a stealer, into the crank pully, slipped the timing out and £1200 engine repair bill.

  6. #25
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    Vehicle : Vectra

    Trim : Design

    Engine : 1.9 cdti

    Year : 2007

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    The first thing to check is the clutch on the compressor, get someone to switch on the a/c and see if it 'clicks' and sucks inward, they sometimes seize in this respect and can be made to work by tapping with a rubber hammer while being turned on and off. The next thing to check is how much gas was put in! There is usually a label under bonnets stating how much to put in. Did the garage put this amount in??? If not the pressure switch will not have enough pressure to allow the system to function. Also worth asking garage if they have the oil needed to lubricate the compressor mixed in with the gas, most don't and if your system has not functioned for a while it will need it to stop the pump from siezing prematurely. On a side note if anyone fits a new a/c pump please please remember to remove the 'holding' oil that comes in them, or they will fail prematurely also, it is only put in to lubricate the seal until fitted to a car.

  7. #26
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    Vehicle : Vectra C

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    Well, as I get the correct voltage at the dead compressor/clutch. I've took all advice from everyone on here and thank you. My gut feeling is still the clutch has given up. So I bought a second hand compressor off a well known internet auction site. Off a Vectra on a 2009 plate with 21k on the dash. 50 quid with a three month warranty, fitted it myself had it gassed for free because my aircon guy is a decent fella and its like the Antarctic in there. Very happy thank you all.

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  9. #27
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    Vehicle : Vectra GSi 3.2 V6

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    Well done, Mark.

    Paul
    2003 Vauxhall Vectra GSi 3.2 V6

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