Question about 1994 Volvo 940

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My ac is blowing hot air even after I charge it. When I turn it on the compressor does not chip in but when I check it, it seem to be working fine. what could cause it to blow hot air?

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The center compressor pulley/clutch should lock in and release with the a/c button on the dash .If it doesn't check fuses and relay's first, then i would suspect a bad clutch/compressor. Also the clutch may not engage do to improper amount of refrigerant.

Posted on Aug 19, 2010

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Has your a/c system ever been completely replaced?If not then the freon you used was wasted(sorry to say).1994 has a/c systems which used R-12 freon.In 1995 the a/c systems were redesigned and use R-134a freon because it is less harmful to the environment.The 2 freons are completely incompatible for use with the other's system.Shops have to have special permits just to buy,sell,use,dispose of the R-12.If your system has been changed over,there is a leak and it needs to be checked out.
Good luck! Greg

Posted on Aug 19, 2010

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