Air Conditioning on 89 740 Turbo

[paskow]

I was fixing a belt for the alternator and noticed the belt going to the A/C Compressor was off. So, I put it on. Then I ran the A/C. I got hot air. Then, I went to the auto parts store and bought a can of R134a. The car has been updated. The meter said it was low. I added R134a. I tried the A/C again. The air was less hot, but not cold.
Also, every 4 seconds, a part on the compressor spins for a second or two and stops.
The funny thing is, I pulled out the fuse and the air got cooler.
Please help. It's starting to get hot here in Minneapolis.

Paskow

[MarcLuxJD]

The rotor that spins at the front of the compressor is an electromechanical clutch that allows the belt to spin the compressor when the clutch is engaged. The clutch will cycle on and off if the refrigerant isn't at the right level as a safely precaution, as the compressor will burn out if not lubricated with oil that's carried by the refrigerant. I was told you really need a professional to check the refrig. level, and to evaluate the system. Once there's a leak, water can get in, and ruin it all when it freezes up, so you must dry the system by applying a vacuum to boil off water vapor from the hydrophillic refrigerant [specialized equipment, not a hoover] . A charge of refrigerant in LA was about $50 with labor. caveat: this is just my experience through my A/C specialist and some of my own web research.

[Guest]

Thank you. I'll have to have a professional look at it. The way you put it, it sounds fixable.

Thanks again,
Paskow