Was driving the other day and it just suddenly quit and started blowing ambient air.
Got home and tried listening for the compressor engaging when I dialed-up 'max cool'. No clutch click. Checked pressure - don't see anything in the sightglass because there's no flow but I have >140PSI in a hot system - it SHOULD be enough pressure for the cutout sensor. Fuse (#7) is okay because the blower runs.
I don't have my metering handy so I can't start electrical checks for a couple of days. There was oil the last time I burped the high-side connector - looked reasonably clean. No visible leaks - I shouldn't have lost any oil. Had UV tracer in it from last year and I see nothing under UV light. Can't add oil or tracer now since I can't get a pressure drop. It's an R12 system, with a rebuilt R134 compressor, running 'Freeze-12' refrigerant (which is good for both '12 & '134 systems & seals & pressures & oils).
Any help greatly appreciated. Thanks.