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      07-10-2016, 09:58 PM   #5
BPMSport
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Drives: 2x Harrop E90 M3, E92 M3, E39
Join Date: Apr 2008
Location: SoCal

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2000 BMW M5  [0.00]
1990 BMW 735i Turbo  [0.00]
2008 BMW M3  [7.50]
2015 BMW M3  [0.00]
2015 BMW M5  [0.00]
Quote:
Originally Posted by dparm
Quote:
Originally Posted by sworks335i View Post
Per the Title.... Have a whirling noise coming from the Oil Filter Housing area. It's like a whirl, whirl, whirl and keeps cycling in/out not quite a constant noise while the car sits at idle. If you blip the throttle it goes away but comes back instantly when the rpm drops back to idle.

I did just change the oil right after the noise started and didn't see anything issues with the cap, used filter or in the bottom of the housing that I could see when doing the oil change... Nothing out of place....

Little stumped, anyone else had the noise or have any idea's?


Does this happen if the car is already warmed up?

The reason I ask is that most cars run in bypass mode when they are cold, meaning the oil filter is effectively not used. Might be the source of the noise.
The oil filter is not bypassed when the car is cold. That would be a terrible design flaw.

There's a thermostat that keeps the cooler in bypass mode. There's a small amount of flow, but not much. Oil NEVER bypasses the filter.
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