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E39 M5 (1998-2003)

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Old 03-16-2011, 09:04 PM
rald17 rald17 is offline
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Location: Salt Lake City, Utah
Join Date: Mar 2011
Posts: 1
Mein Auto: 2000 M5
Help pinpoint the noise

I have a 2000 M5 and it has recently begun making an oscillating/whirring noise. It's more of a whine than a squeak. It comes and goes, but once it starts, it usually doesn't stop while I'm underway. The oscillation frequency doesn't seem to increase or get louder as the speed of the vehicle or RPMs increases or decreases. It generally seems to stop just before the vehicle comes to a stop. The wife and I can't pinpoint where it is originating from, but my best guess is that it's not from the engine compartment, more likely from underneath somewhere.

Any guesses?
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Old 03-17-2011, 06:35 AM
eschreyer eschreyer is offline
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Location: Upstate NY
Join Date: Mar 2011
Posts: 1
Mein Auto: E39
Fuel pump? (Under drivers side)
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Old 03-24-2011, 11:15 PM
ard ard is offline
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Location: Sierra foothills
Join Date: Jul 2009
Posts: 11,658
Mein Auto: '12 X5 35d/E39M5/996TTX50

Absolutely no correlation with motor or speed?

fan in dash?
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Old 03-26-2011, 06:38 PM
anthony1968 anthony1968 is offline
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Location: california
Join Date: Mar 2011
Posts: 2
Mein Auto: 1999 528
Air pump?
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