The compressor is definitely working properly. It cycles on and off as it should and I can feel it cool. I checked everything again and noticed that on the defrost setting I can get the fan to go on and off if I wiggle the button a bit. I think I have a wiring problem behind the panel. I'll check it out this weekend and let you know what happens. Thanks for the ideas.

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LRG
1987 300D Turbo 175K
2006 Toyota Prius, efficent but no soul
1985 300 TDT(130K miles of trouble free motoring)now sold