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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 11-07-2014, 12:51 AM   #1
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Join Date: Jul 2011
Location: Chicago
Posts: 25
My Ride: Imola Red M3
Rear whining noise

I'be been getting this whining noise from the rear of the car when I let off the gas and the car is coasting. When I give it gas it goes away. I changed my rear diff fluid with the oem diff fluid with FM booster about a month ago but the noise is still there.

Any ideas what it could be?
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Old 11-07-2014, 03:54 PM   #2
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Join Date: Apr 2014
Location: Fort Mill SC
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My Ride: '02 M3 SMG
Whirring noise only while decelerating at any or all speeds is most likely caused by bad pinion bearings or loose pinion bearing preload, and almost never by bad ring and pinion gears. Not sure if you have a "whirring" noise as much as whining?
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Old 11-12-2014, 06:02 PM   #3
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I guess it is more of a whirring sound than a whining sound now that I think of it. I'll get that checked out, thanks.
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