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      12-14-2015, 10:35 AM   #2
nate96
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Canada
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Drives: TI Silver 06 Z4 Coupe
Join Date: Nov 2007
Location: Calgary, Alberta, Canada

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I have this as well. It is the heater fan for me. If I turn the fan off the noise goes away, if I turn the fan to full blast for 5 seconds and then back to auto it goes away. If the fan is set to auto when I start the car it will "whirl" with motor RPM.
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