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      08-15-2022, 03:59 PM   #1
jmeenach
Private First Class
United_States
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Drives: E92 M3
Join Date: Oct 2021
Location: CA

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Mystery "whirring" at 40mph

For the last month or so, I have noticed a higher-pitched whirring noise coming from my car that I can't seem to diagnose. The noise is faint and can only be heard from 40 to 45mph and it only occurs when I am on the throttle. If I let off the throttle, the noise goes away. I have produced the same sound in 4th, 5th, and 6th gear (6MT), so I have ruled out a transmission-related issue. Once I accelerate beyond 45mph, the sound goes away.

Has anyone else had a similar issue? I have searched the forum multiple times and haven't been able to find a potential fix... Any help is greatly appreciated!
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