Greetings. My 1989 760 turbo recently started squealing. A look under the hood revealed that the A/C compressor clutch is sometimes "grabbing" on the compressor body, and throwing off sparks.
Would that mean the clutch is failing, or the compressor itself? The A/C (converted to R134a) seems to be functioning as well as one could expect for a conversion.
Thanks,
--Dale