Curious: Whirring/click From Rear - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 07-15-2005, 09:29 PM
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I have a 2005 325xi, and was wondering if anyone knows the source of a whir/click that comes from the rear area of the car when starting or stopping the engine.

It happens about 3-4 seconds after starting the car, and the same noise is also heard about 3-4 seconds after turning the ignition off. The noise is only audible from outside the car (can't hear it if sitting inside) and it sounds like it's coming from the vicinity of the rear wheel on the driver's side. It almost sounds like a small electric motor running for about a half second.

Anyone else heard this noise? Could this be something related to emissions control?
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#2 (permalink) Old 07-16-2005, 10:23 AM
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look underneath and you will find the fuel filter around that area

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#3 (permalink) Old 07-16-2005, 04:06 PM
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Ok, I'll take a peek. So the noise I'm hearing is the filter doing some kind of initialization/shutdown routine I guess?


Quote:
Originally posted by storme@Jul 16 2005, 08:23 AM
look underneath and you will find the fuel filter around that area
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#4 (permalink) Old 08-10-2005, 09:34 PM
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No the filter does no such thing. It's just a filter. It may however be the muffler flap on the inside of the exhaust tip. right side tip if you look inside of it there is a littler flap that is vacuum controlled. (possibility)
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