Need to trouble shoot this AC system and don't know quite where to begin. Suggestions would be appreciated. History: AC system was not operational for 15 plus years. Surprisingly, when the mechanic went to flush it, it still had R12 pressure in it. He evacuated it, flushed the system - man oh man at the crud that came out. Installed a new receiver/drier, new receiver/drier seals, and new "O"-rings at the compressor. The clutch free-wheeled so the hope was that it would work. No such luck. Whats been done: new receiver/drier with "O" rings, new "O"-rings at the compressor, evacuated the system down to minus 29 inches Hg. Added 3 oz. of PAG 46. Added 12 oz. of difluoroethane 152a. ( should have been enough to kick on the compressor but no joy!)( One can kicked it on in my '88 GL) Troubles: With engine off, ignition on but not in start mode, Fan didn't kick on when the AC switch was turned on. Compressor clutch did not engage. Inoperative: AC condenser fan AC evaporator blower Compressor clutch Compressor? Where to start? This thing has a lot of pieces. Thanks, John |
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