I re-read your post, and if I read it correctly, you didn't say whether the compressor has been replaced? Is it original to the car? You said the viscous fan and drier were replaced, but not the compressor.

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'89 260e (212K Mi.), '92 400e (208K Mi.), '92 400e (not a misprint) (146K Mi.), '95 C220, '81 240D--Sold