Hello, I have run into this problem before. The wire that engages the clutch is broken at the entrance to the a/c cluth. If you have some patients and time you can solder the wire back together for a long lasting repair. remove about a half inch of insulation and then heat with a soldering iorn with the solder running down into the clutch. This will fix the problem about 20% of the time. The rest of the time get a repacement compressor. Cheaper than a clutch. Just a pain in the A to do and recharge the system. Pauli