OG M2 lci humming noise when cold

stass · 02-09-2021, 07:02 AM

Hi,
I've noticed a weak humming/buzzing noise when the engine/dct are cold:

On idle it happens in cycles :quiet for ~30 seconds,"this noise",quiet for 30 seconds...
And also briefly when setting off.
It is completely gone when the engine is up to temp.
Drives absolutely fine,no codes.
Car is 2018 M2 DCT with 40k miles
What could it be?
Thanks

Zeese · 02-09-2021, 03:17 PM

Steelguin's wife?

radekkacz07 · 12-21-2023, 10:56 AM

Bump...

Any ideas? I have the same noise. I want to classify that as "normal" but I would like to know what this is.

radekkacz07 · 01-23-2024, 04:10 PM

Bump....anyone, anything? Can't find any info on this.

02-09-2021, 07:02 AM	#1
stass New Member 5 Rep 15 Posts Drives: f87 m2 Join Date: Nov 2019 Location: israel iTrader: (0)	OG M2 lci humming noise when cold Hi, I've noticed a weak humming/buzzing noise when the engine/dct are cold: On idle it happens in cycles :quiet for ~30 seconds,"this noise",quiet for 30 seconds... And also briefly when setting off. It is completely gone when the engine is up to temp. Drives absolutely fine,no codes. Car is 2018 M2 DCT with 40k miles What could it be? Thanks Last edited by stass; 02-09-2021 at 07:10 AM..
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02-09-2021, 03:17 PM	#2
Zeese a coffee drinker 96 Rep 162 Posts Drives: 2017 BMW M2 6MT (LBB) Join Date: Jan 2020 Location: San Francisco Bay Area iTrader: (2)	Steelguin's wife? Last edited by Zeese; 02-09-2021 at 05:39 PM..
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12-21-2023, 10:56 AM	#3
radekkacz07 New Member 2 Rep 9 Posts Drives: BMW M2 Join Date: Jun 2020 Location: Las Vegas, NV iTrader: (0)	Bump... Any ideas? I have the same noise. I want to classify that as "normal" but I would like to know what this is.
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01-23-2024, 04:10 PM	#4
radekkacz07 New Member 2 Rep 9 Posts Drives: BMW M2 Join Date: Jun 2020 Location: Las Vegas, NV iTrader: (0)	Bump....anyone, anything? Can't find any info on this.
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