In Reply to: 134A conversion posted by C///MR on May 20, 2001 at 12:17:56:
Last week my '95 e28 535 was not cooling well. I took it to my local mechanic. He could not find a leak and speculated that over the winter the r12 seeped out as the seals dry up when not used for long periods of time (run your A/C once a month!!!) He charged it up with r134 at a cost of $110 including the new fittings. Car cools great.
In both cases I never changed the compressor, evaporator, condenser, or any seals, just added r134 and they are cooling fine.
located in southern PA not hell hot Pheonix