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Thread: Air conditioner noises

  1. #1
    Join Date
    Apr 2010
    Location
    Canberra
    Posts
    9,459

    Default Air conditioner noises

    I think my car has an issue with the air intake from the outside for the air conditioning unit.
    When my air con is on recycle, its fine, works as expected
    When it's set to get air from outside, it's fine for the first 30 seconds or so, then approximately every 10 seconds it makes a squeaking noise from underneath the center dash.

    It only happens when the air con is set to get air from the outside, and it doesn't matter what the fan speed is, or if the engine is on or off

    Any ideas?
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  2. #2
    Join Date
    Feb 2010
    Location
    Mornington Peninsula
    Age
    42
    Posts
    1,659

    Default

    Sounds like a faulty fan, Sam. Bad bearing in the motor... That's my first guess.

  3. #3
    Join Date
    Oct 2010
    Location
    Eastern Suburbs
    Posts
    177

    Default

    Is ur car still under warranty?

    Hopefully isn't too difficult to fix need the aircon cranking at this time of year.

  4. #4
    Join Date
    Aug 2010
    Location
    Hills Area
    Posts
    802

    Default

    I've just had a similar noise. When I put the air con on and change the air from 'recycle' -> 'from outside' I hear a loud .. click-click-click-click-click noise in rapid succession.

    I never normally have air come from outside, but today it's been raining and I pressed the defrost button, which automatically switches to 'outside air'.

    I then started playing around with the buttons to reproduce the problem. It's seems like when you switch from outside to inside and visa versa.

  5. #5
    Join Date
    Apr 2010
    Location
    Canberra
    Posts
    9,459

    Default

    I had a noise that only happened with air from outside, was a dirty filter

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  6. #6
    Join Date
    Sep 2009
    Location
    Seven Hills, Sydney
    Age
    79
    Posts
    443

    Default

    Mouse in system?

  7. #7

    Default

    could be the gearing which moves the diverters in the system. would be a huge pita to get to ...

  8. #8

    Default

    I had an issue with random clicking most obviously heard when the AC was on, ended up being a shot tensioner pulley bearing.

  9. #9
    Join Date
    Dec 2010
    Location
    Werribee, Vic
    Posts
    472

    Default

    Leaf or some other bit of debris stuck in the fan and rubbing on the ducting/flaps when set to fresh air, or a piece of debris stuck to the air intake flap and rubbing on the fan...

    Would similar from time to time in my HQ, then a while later bits of chopped up leaf would start coming out the vents...

    Chris.

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