Question about 1995 Chevrolet Suburban

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1995 Chevy Suburban blows cold once charged then hours later hot

My chevy suburban compressor is coming on so added freon. It blew cold for a couple of hours then not compressor noise and blowing hot air. Put dye in it not leaks detected at that time and there was pressure in the line indicating should not be any leaks. Recharged blew cool compressor came back on then about two hours later doing the same things. What could this be?

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  • Marvin
    Marvin May 11, 2010

    then u have a leak.

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  • Master
  • 520 Answers

Its a leak ...probably concealed like in an evap housing or rear air unit and lines (if it has that). Prob at this juncture I would remove all the freon and bring system into a vaccuum with a pump and see if it will hold vaccum for an extended period of time. A bad leak will not hold srong vacuum very long and much cheaper than wasting expensive and enviromental un0friendly refrigerants.

Posted on Jun 23, 2009

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