In Reply to: HIGH WHINE ON MY 1990 M3 111115 MILES!!!!! posted by R Tumbaga on March 10, 2001 at 16:41:43:
If it is dependent of RPM, I would have a friend rev the engine as I would try to locate the source of noise in the engine bay. Maybe the pulleys need to be dressed with vasoline. If whining occures only on radio, that would be induced by the ignition wires.