Auto Air Conditioning & Heater Repair: auto A/C inoperative, chevy blazer, vacuum pump

Question
My A/C had been working fine until recently when the unit started blowing warm air..instead!?  I own a 1985 Chevy Blazer with a 2.8 Liter V6.  The compressor has been replaced since 2 years ago.  I placed a vacuum pump near the condensor and it register at 110 psi (inside the "warning area"..)  I have added 14 oz. of R134a and noticed NO CHANGE.  Question:  Should I add another can of R134a or should I have the compressor and condensor replaced?

Answer
I placed a vacuum pump near the condensor and it register at 110 psi (inside the "warning area"..) ?.


Why would you want to do that ?.


Contact me at: meperganfortis@msn.com and I will e-mail you a diagnostic page that you can follow to locate your problem.


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