Need help with an AC issue please...

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Cadillac Escalade, EXT and ESV Forum - 1999 - 2006 Discussion, Need help with an AC issue please... in Cadillac Escalade Forums; So I refuse to take my 2004 Escalade to any local shop in Miami, but I might be forced to ...
  1. #1
    Furyous is offline Cadillac Owners Member
    Automobile(s): 2004 Escalade
    Join Date
    Apr 2009

    Need help with an AC issue please...

    So I refuse to take my 2004 Escalade to any local shop in Miami, but I might be forced to if I can't figure this out on my own.

    The snowflake on my digital display for my AC disappeared, and when I try to re engage the compressor, it blinks and disappears. Should be low on refrigerant, so a pretty easy problem to fix. I bought a can of R134a and pressure gauge. After leaving front and rear air on max AC for 3 minutes, I connected the pressure gauge. It read 100 lbs! I looked into it, and I read that sometimes you need to empty the refrigerant into it for a few seconds until the system normalizes and the pressure should go down to normal levels. This was not the case. Obviously the compressor will not turn on due to a high pressure situation to prevent damage, but where do I go from here? Should I release all pressure from the high to purge the system and try again, or am I stuck dealing with dishonest Miami repairmen?

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  3. #2
    jnrsesv is offline Cadillac Owners Enthusiast
    Automobile(s): '05 ESV Platinum
    Join Date
    Feb 2010
    Sunny South Carolina

    Re: Need help with an AC issue please...

    I am somewhat knowledgeable on this subject. With the low side of the AC system running at 100 PSI it pretty much means that the compressor is about to give up the ghost.

    If you were to "rent" a professional gauge (block) set from one of the big box auto parts stores, check both high side and low side preassures, if the gauge needles start to jitter, that is indicative of a leak, or a failing bearing in the compressor causing it to bleed pressure back to the low side.

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