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Old 06-26-2011, 09:06 PM   #1
clydesdale
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Join Date: Jul 2010
Location: NY
Posts: 295
My Ride: e30, 2004 zhp
Air release sound on shut down of motor?? 330i

I believe it is something to do with the vacuum. I hear a motor turning inside the car and when the motor sound stops I hear an air release sound. Anybody know what this is? Thanks.
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