Slight super charger whine sound from engine? N52

porsche959 · 12-09-2019, 12:44 PM

I’m getting a funny whining sound when I rev out the motor, usually full throttle, between 2-4K rpms.

It almost sounds like 1/5 of a super charger whine. Anyone else hear this sound on their n52?

Schmitz · 12-09-2019, 12:49 PM

Quote:

Originally Posted by porsche959

I’m getting a funny whining sound when I rev out the motor, usually full throttle, between 2-4K rpms.

It almost sounds like 1/5 of a super charger whine. Anyone else hear this sound on their n52?

Like a squeal? What oil filter did you use?

colorado.e9x · 12-09-2019, 12:53 PM

It's your super charger, the silencer must be going out

part no. 12317525376

porsche959 · 12-09-2019, 12:58 PM

Quote:

Originally Posted by Schmitz

Like a squeal? What oil filter did you use?

No squeal. Just did new belt and tensioner. Also, added an aftermarket intake tube with OEM filter box. Maybe it’s the straight tube that’s changing sound. But it’s not typically intake whooshing sound, intake definitely a mini supercharger whining sound.

OEM oil filter, changed every 5k miles or so.

desertman123 · 12-09-2019, 12:58 PM

Could be power steering pump

Also these motors have timing chains which aren't 100% silent, you may be hearing this (I wouldn't worry about it if it is)

Actually in general, these motors don't sound great except for the exhaust.

porsche959 · 12-09-2019, 01:00 PM

Quote:

Originally Posted by desertman123

Could be power steering pump

Also these motors have timing chains which aren't 100% silent, you may be hearing this (I wouldn't worry about it if it is)

Actually in general, these motors don't sound great except for the exhaust.

Interesting. I also swapped an m3 steering rack and replaced fluids to OEM, roughly started hearing that sound after the install.

It happens when going straight though, no strange sounds when turning.

Welcome to NBA Jam · 12-09-2019, 01:32 PM

Try running the water pump bleed procedure and see if that's the noise you're hearing. The water pump can make a whine noise.

ryan stewart · 12-09-2019, 02:29 PM

Quote:

Originally Posted by porsche959

Interesting. I also swapped an m3 steering rack and replaced fluids to OEM, roughly started hearing that sound after the install.

It happens when going straight though, no strange sounds when turning.

Power steering pump runs all of the time, not just when turning. That is why they went to electric, to save energy while not turning.

Usually when people equate power steering whine to turning its because their fluid is low and it runs dry. You might have air in the system.

More likely that if youre belt setup is good. If it happens when you rev likely not related to water pump since that is electric now.

rothwem · 12-09-2019, 02:32 PM

Does it occur with the A/C off? When my A/C was low on refrigerant, it made a supercharger-like sound.

BavariasMostWanted · 12-17-2019, 03:06 PM

When I was young(er) and dumb(er) I removed the entire box and put a pod filter right off where the back of the box fit. The motor screamed like a drill on throttle, granted it ran like crap but it was pretty noisy. Put the box back on and it sounded normal afterwards. It seemed like it's just the induction noise these motors make.

porsche959 · 12-17-2019, 03:14 PM

Quote:

Originally Posted by rothwem

Does it occur with the A/C off? When my A/C was low on refrigerant, it made a supercharger-like sound.

Makes the same noise regardless if ac is on or off.

vilord · 12-17-2019, 04:38 PM

I heard this in the '09 I just bought. My '07 never made the noise. Not sure what it is either, but my first guess is the steering pump or alternator.

rothwem · 12-18-2019, 12:02 PM

Quote:

Originally Posted by porsche959

Quote:

Originally Posted by rothwem

Does it occur with the A/C off? When my A/C was low on refrigerant, it made a supercharger-like sound.

Makes the same noise regardless if ac is on or off.

Gotcha. The only other thing I can think of is that the 6L45 (GM Automatic) makes a bit of a whine. V6 Camaros used to use the same trans and they make the noise too.

lowrydr310 · 12-18-2019, 01:05 PM

Quote:

Originally Posted by porsche959

I’m getting a funny whining sound when I rev out the motor, usually full throttle, between 2-4K rpms.

It almost sounds like 1/5 of a super charger whine. Anyone else hear this sound on their n52?

Did this just start or did it always make the sound?

My car makes a whining sound that is associated with engine RPMs; I can hear it in gear or in neutral. I removed the accessory belt and the wine is still there, leading me to believe it's the cam chain and from what I read on this site it's completely normal for the N52.

AsonC22 · 01-24-2024, 10:00 AM

Would anyone know where I can buy a super charger for my 2008 bmw 328xi

mainbearing · 01-24-2024, 04:29 PM

Not sure what a whipple charger is

, but check out 15% off on Amazon for a C-Tek charger.

Quote:

Originally Posted by AsonC22

Would anyone know where I can buy a whipple charger for my 2008 bmw 328xi

mainbearing · 01-24-2024, 04:31 PM

If the whining sound is not there in Neutral or Park, then likely it is not the transmission (fluid pump).

lordnikon · 01-24-2024, 04:44 PM

The OP got banned, who cares. N52 what supercharger...wtf?

12-09-2019, 12:44 PM	#1
porsche959 Banned 473 Rep 996 Posts Drives: porsche Join Date: Jul 2018 Location: chicago iTrader: (0)	Slight super charger whine sound from engine? N52 I’m getting a funny whining sound when I rev out the motor, usually full throttle, between 2-4K rpms. It almost sounds like 1/5 of a super charger whine. Anyone else hear this sound on their n52?
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12-09-2019, 12:53 PM	#3
colorado.e9x eBay Special 3621 Rep 3,179 Posts Drives: E90 330xi Join Date: Feb 2018 Location: Western Slope, Colorado iTrader: (1) Garage List 2006 BMW 330xi [10.00] 2007 BMW 328xi [9.50]	It's your super charger, the silencer must be going out part no. 12317525376 __________________ Common sense is a flower that does not bloom in everyone's garden
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12-09-2019, 12:58 PM	#5
desertman123 E82 Mudflap Ambassador 2239 Rep 2,220 Posts Drives: '08 128i Join Date: May 2016 Location: Orlando, FL iTrader: (0) Garage List 1992 Honda Beat [9.50] 2008 BMW 128i [10.00] 2014 BMW 528i [10.00]	Could be power steering pump Also these motors have timing chains which aren't 100% silent, you may be hearing this (I wouldn't worry about it if it is) Actually in general, these motors don't sound great except for the exhaust. __________________ My 2008 128i - Sparkling Graphite/Beige - Sport pkg - 6MT - Click me! Parents' 2014 528i - Mineral White/Ivory White - fully loaded Instagram @Andreys_128i and @Honda.Bito
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12-09-2019, 01:32 PM	#7
Welcome to NBA Jam Is it the shoes!? 3893 Rep 5,111 Posts Drives: (Sold) 2011 E92 335i ZMP 6MT Join Date: Mar 2014 Location: USA iTrader: (1)	Try running the water pump bleed procedure and see if that's the noise you're hearing. The water pump can make a whine noise.
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12-09-2019, 02:32 PM	#9
rothwem Major 497 Rep 1,208 Posts Drives: 2009 BMW 328i Wagon Join Date: Apr 2009 Location: Asheville, NC iTrader: (0) Garage List 2009 BMW 328i [10.00]	Does it occur with the A/C off? When my A/C was low on refrigerant, it made a supercharger-like sound.
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12-17-2019, 03:06 PM	#10
BavariasMostWanted PuP Enthusiast 2 Rep 9 Posts Drives: '06 330i, '87 535is Join Date: Dec 2019 Location: California iTrader: (0)	When I was young(er) and dumb(er) I removed the entire box and put a pod filter right off where the back of the box fit. The motor screamed like a drill on throttle, granted it ran like crap but it was pretty noisy. Put the box back on and it sounded normal afterwards. It seemed like it's just the induction noise these motors make.
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12-17-2019, 04:38 PM	#12
vilord Major 497 Rep 1,316 Posts Drives: E91, Tundra, TT, SV650 Join Date: Apr 2013 Location: boston iTrader: (1) Garage List 2019 Tundra TRD SR5 [0.00] 2002 Audi TT Roadster [0.00] 2009 BMW 328i Wagon [0.00]	I heard this in the '09 I just bought. My '07 never made the noise. Not sure what it is either, but my first guess is the steering pump or alternator. __________________ Jesse
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01-24-2024, 10:00 AM	#15
AsonC22 Registered 0 Rep 1 Posts Drives: 2008 BMW 328XI Join Date: Jan 2024 Location: Paterson iTrader: (0) Garage List 2008 Bmw [0.00]	Would anyone know where I can buy a super charger for my 2008 bmw 328xi
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01-24-2024, 04:31 PM	#17
mainbearing Lieutenant Colonel 1132 Rep 1,733 Posts Drives: BMW 328i Join Date: Apr 2019 Location: LA iTrader: (0)	If the whining sound is not there in Neutral or Park, then likely it is not the transmission (fluid pump).
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01-24-2024, 04:44 PM	#18
lordnikon Captain 527 Rep 622 Posts Drives: Break My Wallet Join Date: Feb 2023 Location: Ontario iTrader: (0) Garage List 2011 BMW 328i xDrive [0.00]	The OP got banned, who cares. N52 what supercharger...wtf?
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