Hey you guys, I know its been a while been busy with school, work, and the other project, BUT IM BACK! and I have a question. My 65 mustang has factory AC, however recently there has been slippage on the pulley. the belts and all are spinning fine, however the pulley on the actual AC unit itself is spinning in spurts and fits, fast for a second, then not at all, then slow, then regular speed. what do I need to do to fix this? Im almost to the point where Im willing to ditch this AC compressor anyway for the turbo mounting location, but this texas summers gunna be hot...Thanks you guys!

 

Sounds like a clutch or clutch coil (which is part of the clutch), but could be an issue with the wiring to the clutch coil as well. Do you have a multimeter?

 

If you have the earlier type, with the commutator brushes on the back, you may not be getting proper contact due to dirt, wear or misalignment.

 

I know jack about A/C compressor pulleys, but that sounds like your problem, or at least something is causing it to not activate correctly. If you are in the San Antonio/Austin area, I can recommend a reputable A/C shop that works on my stuff. You are right, there is no way you can drive that thing from May to Oct without A/C!

 

Pfffft:P I drove my car (which has no a/c) for several years in 100-110F summers in central CA. Black vinyl and all.

 

You and your driving 100 miles to golf both ways with no AC in a 120 degree heat... and not just any heat, heat with a 110% humidity... not even breaking a sweat while waving at the girls in bikinis...




hahaha if the AC is there might as well use it...

 

There is a pressure switch in the system that turns on and off the compressor as needed. If you are running low on refrigerant the compressor will kick on and off. I say take it to the A/C shop and have them check it.

 

It should never be spinning slowly, relative to engine speed. That means the clutch is slipping.

 

nice to see you back

good luck with the fix, but if all else fails just take off the pulley and go open windows its true old school.

 

Welcome back!!!!!!!!!!!!!!! My thinking is its the clutch is k-put. If it starts slow then speeds up its slipping.