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Thread: Need A/C Help

  1. #1
    Join Date
    Nov 2010
    Location
    Charleston
    Posts
    807

    Default Need A/C Help

    '01 Suburban. A/C blows very cold then suddenly blows warm and then goes back to cold. Sometimes a few minutes later, sometimes 30 minutes. No particular reason.

  2. #2
    Join Date
    Nov 2014
    Location
    Newberry
    Posts
    730

    Default

    I got one doing the same thing. Has to some kind of gate operated by vaccum.

  3. #3
    Join Date
    Jan 2015
    Location
    Charleston
    Posts
    2,397

    Default

    My 07 has done this 2-3 times in 3 years. Made me reconsider leaving my dog in the car with the AC running. I never did anything other than I think cut my car off and back on and I maybe unhooked the battery once but this is probably what is going on. I think mine was also only blowing hot on one side when it did it.




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  4. #4
    Join Date
    Jul 2003
    Location
    Moncks Corner
    Posts
    15,556

    Default

    I'm guessing a bad thermostat or you've got a slow leak and are low on freon.
    Ephesians 2 : 8-9



    Charles Barkley: Nobody doesn't like meat.

  5. #5
    Join Date
    Dec 2010
    Location
    Summerville
    Posts
    14,557

    Default

    My guess is a short or faulty pressure switch. Ask me how I know

    KRT can fix that right up for you.

    Mine was a 01 Tahoe.

  6. #6
    Join Date
    Dec 2011
    Location
    Gville
    Posts
    1,384

    Default

    My 05 Tahoe did that. Usually turning off and restarting took care of it. It was only my drivers side. That video makes sense though.

  7. #7
    Join Date
    Feb 2016
    Posts
    2,625

    Default

    It's your compressor clutch.

  8. #8
    Join Date
    Nov 2010
    Location
    Charleston
    Posts
    807

    Default

    Looks like compressor is not running. Jumping LP switch doesn't fix it. Probably the clutch.

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