Why is my car's A/C blowing hot air when it's in neutral?

I have a 2006 VW GTI with a manual transmission. Sometimes, like when sitting at long stoplights, the air conditioner will start blowing warm/hot air. Once I start moving, it cools off again. What causes this, and is it expensive to repair? As you can imagine, this isn't the most pleasant to deal with in Texas, in July! Thanks!

  • TexBex
  • July 27, 2011, 11:52 am
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  • 3

    Because, Little Ms.TexBex, quite frankly your A/C is a twat.

    Well that was certainly helpful! :P
    - TexBex July 28, 2011, 4:25 am
    You know me TexBex, I'm always helping! :D
    - DarkHunter July 28, 2011, 8:19 am
    I shall award you...
    - TexBex July 28, 2011, 8:47 am
    Wooo, I shall award you with a hug!
    - DarkHunter July 28, 2011, 8:48 am
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  • 1

    have a couple of friends with gti's one's an 07 one's an 08 both have had issues with their ac, bring it in to the dealership and give them hell.

  • 1

    Black magic?

  • 1

    are there any other issues that happen? this could be the beginning of the end of your alternator.

    Nope, other than that she runs like a champ!
    - TexBex July 28, 2011, 4:25 am
  • 1

    thermostats fucked. easy fix. not sure how much though.

    • exile
    • July 27, 2011, 7:46 pm
  • 1

    maybe its made cause you use it so much roll down the windows. i do it all the time. just dont stick your arm to far out i cut my hand on a tree.

  • 1

    sure you dont just need it recharged?

    IDK, I've never had that done! (So maybe that means it's time...)
    - TexBex July 28, 2011, 6:15 am
    It may be. That means one of two things actually:

    1. Your charge is just getting used up finally

    2. The compressor is going, and moving air is helping to compensate. Hope you just need a charge. $150 recharge is far cheaper than having the compressor replaced.
    - FireRoastedFire July 28, 2011, 7:06 am
    Yep. It seems like I may have already had to have the compressor replaced...maybe 2007-ish?
    - TexBex July 28, 2011, 7:16 am
    When in 2007? Because if it was prior to June 2007, that may be it. Compressors for VW Golf, GTI, Passats, Jettas, and Eos had issues with lubrication that caused early failure issues with them.

    1. The limiter (indicated by 1 on the photo) is broken or is missing
    2. The compressor control valve is restricted by metal particles and the compressor does not build up pressure.

    Directly from an article regarding it. sounds like it is having pressure issues to me.
    - FireRoastedFire July 28, 2011, 7:30 am
  • 1

    Do this:

    1. Get a 550W power suply unit, like for a computer.
    2. Buy 10 360mm case fans from Xclio.
    3. Affix fans hooked up front to back to make large tube of fans.
    4. Attach PSU to fans.
    5. Enjoy new AC unit / Air Cannon / Turbine.

    Now you can use this for 101 different purposes, like As AC or an air cannon as mentioned, or strap it to your car for more speed, or use it to blow leaves about, or attach a radiator fan to it and destroy the planet with your wind-based WOMD.

  • 1

    woah woah woah $150?? jiffy lube does it for $89.99... i work there.. lol

    *tapping fingertips together* Eeeexcellent...
    - TexBex July 29, 2011, 4:37 am
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