Strange whistling noise at occasions..

suj999 · 04-24-2024, 04:15 PM

Ok, here is a new one.

I get this strange high pitch whistling noise about once a week.

I have recorded it here, where it was rather loud. It's not always this loud and will go away by itself.

Any ideas please.

Car
640d
2016
Everything is almost stock.

https://youtube.com/shorts/0a8Fa0mQG...sp2_bjDsKwXbrB

arucano · 04-24-2024, 08:06 PM

Difficult to hear but it could be a vacuum leak.

Oris4 · 04-24-2024, 08:39 PM

Not sure if an issue on your car but n63/tu cars get this and it’s usually pcv

LA640WS · 04-24-2024, 11:15 PM

Quote:

Originally Posted by suj999

Ok, here is a new one.

I get this strange high pitch whistling noise about once a week.

I have recorded it here, where it was rather loud. It's not always this loud and will go away by itself.

Any ideas please.

Car
640d
2016
Everything is almost stock.

https://youtube.com/shorts/0a8Fa0mQG...sp2_bjDsKwXbrB

is it the noise in the video below? if so, related to the valve attached to the valve cover. most prevalent while auto start stop is active, and just before the car turns off.

cheers

suj999 · 04-25-2024, 04:47 AM

Thanks all, try it with the volume to the max as at the end of the clip it gets clear.

I was thinking could it's bee the wheel bearing??

suj999 · 04-25-2024, 04:49 AM

Quote:

Originally Posted by LA640WS

is it the noise in the video below? if so, related to the valve attached to the valve cover. most prevalent while auto start stop is active, and just before the car turns off.

cheers

Don't think it's that.
This sounds for a lot longer and sounds more mechanical I think

LA640WS · 04-25-2024, 08:08 PM

Quote:

Originally Posted by suj999

Don't think it's that.
This sounds for a lot longer and sounds more mechanical I think

Check this out, connected to Aircon component.. It's from an f30, but similar sound nevrtheless. Scroll down towards bottom of page 2, and look at ineedabiggerboat's response

https://f30.bimmerpost.com/forums/sh...1439331&page=2

suj999 · 04-26-2024, 04:40 AM

Quote:

Originally Posted by LA640WS

Check this out, connected to Aircon component.. It's from an f30, but similar sound nevrtheless. Scroll down towards bottom of page 2, and look at ineedabiggerboat's response

https://f30.bimmerpost.com/forums/sh...1439331&page=2

Thanks, but it's saying page not found

LA640WS · Today, 01:31 AM

Quote:

Originally Posted by suj999

Thanks, but it's saying page not found

https://f30.bimmerpost.com/forums/sh....php?t=1439331

04-24-2024, 04:15 PM	#1
suj999 Private First Class 9 Rep 144 Posts Drives: F06 640d M Sport, F10 520d SE Join Date: May 2014 Location: Essex, UK iTrader: (0)	Strange whistling noise at occasions.. Ok, here is a new one. I get this strange high pitch whistling noise about once a week. I have recorded it here, where it was rather loud. It's not always this loud and will go away by itself. Any ideas please. Car 640d 2016 Everything is almost stock. https://youtube.com/shorts/0a8Fa0mQG...sp2_bjDsKwXbrB
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04-24-2024, 08:06 PM	#2
arucano Captain 252 Rep 631 Posts Drives: 2014 M6 Grand Coupe CP Join Date: May 2017 Location: Kingwood TX iTrader: (0) Garage List 2014 BMW M6 GC [10.00]	Difficult to hear but it could be a vacuum leak. __________________ F06 M6 Grand Coupe CP Sapphire Black Metallic The drive is the destination
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04-24-2024, 08:39 PM	#3
Oris4 Private 19 Rep 80 Posts Drives: 2012 BMW X5 35i Join Date: Jul 2017 Location: Boston iTrader: (0)	Not sure if an issue on your car but n63/tu cars get this and it’s usually pcv
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04-25-2024, 04:47 AM	#5
suj999 Private First Class 9 Rep 144 Posts Drives: F06 640d M Sport, F10 520d SE Join Date: May 2014 Location: Essex, UK iTrader: (0)	Thanks all, try it with the volume to the max as at the end of the clip it gets clear. I was thinking could it's bee the wheel bearing??
	Appreciate 0 Quote