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      10-10-2012, 05:00 PM   #15
marshall834
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Drives: 2007 BMW 335i
Join Date: May 2012
Location: The Biggest Little City in the World

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Quote:
Originally Posted by Goofyguy View Post
There are a few noises that start with a BMW, first you have the DTML pump which does a quick pressure test on the fuel tank to see if there are any leaks. Then you fire up the car and if its a 330 or 335 you will hear the exhaust valve closing (metal rattly sound). Then if its a coupe the seat belt hand ups, a few tones, then the radio. Its a poorly designed orchastra of annoying. Mine has a rattle at high speeds on the highway coming from the back seat area.
I think I hear that pump every time you open a door, unlock your doors, correct? Small humming sound.

I'm not so sure I've ever heard the exhaust flap closing. I'll have to pay attention to that.

Regardless, good info, thanks!
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