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      09-22-2019, 06:07 PM   #1
Mike.
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Bizarre N55 noise

Hey guys..

Please see the video, you can hear the noise at 19,22,25, 27 seconds.

Praying this isn't a rod bearing.

Only happens under load, as it does not rattle when parked and revving.

I also noticed I have a slight oil leak today, if that matters for this. Could it be getting on the belt?

Thanks as Always-
Mike

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      09-22-2019, 07:10 PM   #2
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Quote:
Originally Posted by Mike. View Post
Hey guys..

Please see the video, you can hear the noise at 19,22,25, 27 seconds.

Praying this isn't a rod bearing.

Only happens under load, as it does not rattle when parked and revving.

I also noticed I have a slight oil leak today, if that matters for this. Could it be getting on the belt?

Thanks as Always-
Mike

To me it sounds like a piece of trim vibrating
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      09-22-2019, 07:14 PM   #3
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Originally Posted by Eschmacher View Post
To me it sounds like a piece of trim vibrating
lets hope thats all it is
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      09-22-2019, 08:29 PM   #4
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I agree, sounds like plastic vibrating when at certain harmonic frequencies.
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      09-22-2019, 08:41 PM   #5
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https://f30.bimmerpost.com/forums/sh...=949816&page=1

Check that there is a weight on your A/C line as posted in this thread. I have the weight but I still get that exact same whirring/buzzing noise at times. The noise goes away when I turn my A/C off.
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      09-23-2019, 12:18 PM   #6
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Quote:
Originally Posted by Haywood187 View Post
https://f30.bimmerpost.com/forums/sh...816&page=1

Check that there is a weight on your A/C line as posted in this thread. I have the weight but I still get that exact same whirring/buzzing noise at times. The noise goes away when I turn my A/C off.
You rule. Pretty sure this is it
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