Automotive Air Conditioning Information Forum

Clutch gap was good. Slight drag with the .020 blade. System was 4.25 oz low. Installed a new compressor, it held a vacuum of 380 microns, charged 18 oz of refrigerant. Haven’t been able to get it to fail so far and it is cooling well.

Great job! Super good vacuum.
Did you try it with the correct charge before you replaced the comp? Wonder what led you to change the comp.
The 275 Hi side reading you posted would indicate the comp can compress....

I Changed the compressor because I suspected the thermal limit switch was bad. I couldn’t find just a switch. The jury is still out. The car just left. I wasn’t able to get it to fail. Have my fingers crossed in hopes it is fixed.

Dgreen wrote: ↑Fri Jun 24, 2022 11:01 am Clutch gap was good. Slight drag with the .020 blade. System was 4.25 oz low. Installed a new compressor, it held a vacuum of 380 microns, charged 18 oz of refrigerant. Haven’t been able to get it to fail so far and it is cooling well.

For a small-capacity system like this one, 4.25-ounces low (nearly 24-percent) is significant and explains the odd compressor cycling, at least in part. With the correct charge in it and a new compressor assembly, it should now be fixed.