Hello. I have a 1994 Z28 A4. My A/C is not blowing out cold air. All the fuses are fine. There is adequate refrigerant in the system. I noticed however that when I have the A/C on, I do not hear the audible clicking of the compressor switching on and off as does my other cars. What is the problem and where should I start? Any help is greatly appreciated. Thank you.

 

Confirm that the compressor is not clicking on, then check the relays, double check the fuses, check the wiring and connector to the compressor.

 

if the compressor is not on, then the clutch could be bad, or the system could be completely dry and have no pressure. If the compressor is turning on and off repeatedly...then the system has some pressure, but not enough, meaning it needs more freon.