Anyone ever have this problem? Randomly, when turn on A/C of 1988 E34 535i, only one of two fan blowers blow out cold air - the other, usually left side blower, is shut off, no air whatsoever. After engine has stopped, usually for few hours, and then restarted, and A/C turned on, both fan blowers function normally, with cold air. Just happens randomly and can't predict conditions when this problem occurs.