You may be hearing the CCU temperature sensor fan. That has been known to fail in the "on" mode. Try pulling that fuse.
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1991 C4 Coupe, Polar Silver
The hours a Porsche spends parked. You don't get those back.
Last edited by dfinnegan; 07-03-2009 at 11:42 PM.
Reason: CCU not ECU!
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