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Thread: Air con?

  1. #1
    Regular Member Stuarty's Avatar
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    Default Air con?

    When the air con is switched on should the revs rise like most other cars do as mine is not?
    Last edited by Stuarty; 19th January 2008 at 22:05.

  2. #2
    [Ex]Admin Duncan's Avatar
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    Default

    Should normally rise a bit as the compressor kicks in. Are you getting conditioned air? i.e. is the Air Con working as normal and the compressor actually kicking in?

  3. #3
    Ex Vec-C Admin ed taylor's Avatar
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    Vehicle : Vectra Estate

    Trim : Elite

    Engine : 3.2 V6

    Year : 04

    Mileage : 000

    Default

    The engine has to work a little harder when there is a load put on the electrics so it does speed up a bit to compensate.

  4. #4
    Regular Member Stuarty's Avatar
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    Default

    I cant hear it kicking in and its hard to tell if its working as its so ****** cold outside at the moment but when the windscreen is misted if i turn on the fan to demist the window it takes ages but if i switch on the aircon it will demist it in a matter of seconds?

  5. #5
    Regular Member Stuarty's Avatar
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    Default

    Ah so is it an electric pump rather than belt driven?

  6. #6
    [Ex]Admin Duncan's Avatar
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    Default

    Quote Originally Posted by Stuarty View Post
    I cant hear it kicking in and its hard to tell if its working as its so ****** cold outside at the moment...
    At low outside temperatures the cooling unit (cooling compressor) switches off automatically - so that'll be why you won't hear it kicking in or the revs rising.
    Quote Originally Posted by Stuarty View Post
    ....but when the windscreen is misted if i turn on the fan to demist the window it takes ages but if i switch on the aircon it will demist it in a matter of seconds?
    But it'll still condition the air, hence why it will still demist the screen more quickly.

  7. #7
    Full Member Big Sig's Avatar
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    Default

    I'm pretty sure its belt driven with a magnetic clutch unit. My rev's don't rise
    Now I need a turbo to keep up!

  8. #8
    [Ex]Admin Duncan's Avatar
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    Default

    Yep, but when it does kicks in, i.e. the clutch engages, it'll be putting more load on the engine so the revs will rise a bit accordingly.

  9. #9
    Full Member Big Sig's Avatar
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    Default

    Quote Originally Posted by Duncan View Post
    Yep, but when it does kicks in, i.e. the clutch engages, it'll be putting more load on the engine so the revs will rise a bit accordingly.
    Maybe, but when switching the CC to eco and back it only flucuates a little, but they do not stay at a constant risen level as they did in my old astra. Unless the quick rise is what you all mean?
    Now I need a turbo to keep up!

  10. #10
    Regular Member Stuarty's Avatar
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    Default

    Ok cheers guys thats great it aint broken thats good to hear lol.Thanks for your help on the matter apreciate it

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