Cold engine whine...

slammed335i · 07-09-2009, 01:35 PM

I have a 2008 335i with a JB3...and If I drive off with a cold engine like going to work I hear a whine.this is the 3rd day I heard it....what the fuk !!!!

Ilma · 07-09-2009, 01:44 PM

Quote:

Originally Posted by slammed335i

I have a 2008 335i with a JB3...and If I drive off with a cold engine like going to work I hear a whine.this is the 3rd day I heard it....what the fuk !!!!

Some say it's the bearings......some say it's shaft play causing the turbo impellers to wobble and create siren like harmonics.

Quite a few have reported a similar noise.

Time will tell if it gets progressively louder and becomes a problem or not.

My friends stock 135 does not make this sound.

I wonder if anyone has managed to get their turbos replaced under warranty for the whining sound?

I know wastegate rattles are covered by warranty.....just haven't heard of anyone getting turbos replaced for whine.

U Might want to look here: http://www.e90post.com/forums/showth...ht=turbo+whine

cn555ic · 07-09-2009, 01:57 PM

Do you often drive the car WOT while the car is not warmed?

lpphreakx06 · 07-09-2009, 02:50 PM

Does it sound kind of like a whistle?

Xander · 07-09-2009, 02:55 PM

I have this sound when it's cold. I never drive it hard when it's cold. definitely turbo sound. Some of my friend's 335's do it too, none of them have really become any worse since i noticed it a few months ago.

X...

cbad335 · 07-09-2009, 05:27 PM

I also have the police siren sound when the engine is cold; although, not nearly as loud as one of the videos I heard. I never romp the car when it's cold and have a little over 15K on the clock. The car still runs great so I'm not too worried about it. Time will tell.

Mike@N54Tuning.com · 07-09-2009, 05:39 PM

Quote:

Originally Posted by slammed335i

I have a 2008 335i with a JB3...and If I drive off with a cold engine like going to work I hear a whine.this is the 3rd day I heard it....what the fuk !!!!

Some whine is normal, but excessive whine indicates a potential problem. You can always run it by the dealer to get their opinion on whether it is normal or abnormal.

Mike

cstmx_ryder · 07-09-2009, 06:11 PM

I have the same whine like sound also, but only on cold start up, goes away after the car warms up a little............The dealership double checked all the connections and all is good. Guess I'm one of the few that has this problem.........

I335 · 07-09-2009, 06:28 PM

How many miles on the car and for how many miles has the JB been on? I have about 15K on mine with absolutely no whine. I do get some lurching when it's cold but that only lasts for the first 1st & 2nd gear shifts and I really go easy on it until it warms up a bit. I think cn555ic has a very valid question - do you get on the throttle often when it's cold?

Ilma · 07-09-2009, 09:48 PM

Quote:

Originally Posted by cstmx_ryder

I have the same whine like sound also, but only on cold start up, goes away after the car warms up a little............The dealership double checked all the connections and all is good. Guess I'm one of the few that has this problem.........

Sounds like they were not taking your noise as a serious problem.

I think that unless you are experiencing a decrease in performance, blowing oil, or the sound is obviously loud, the only way to check the turbos is to measure shaft play for tolerance to spec.

Not an easy task on the N54, so most likely the dealer is not going to do anything about it until something breaks.

Like Mike mentioned already, perhaps some amount of turbo whine is considered OK.

cstmx_ryder · 07-09-2009, 10:01 PM

Quote:

Originally Posted by Ilma

Sounds like they were not taking your noise as a serious problem.

I think that unless you are experiencing a decrease in performance, blowing oil, or the sound is obviously loud, the only way to check the turbos is to measure shaft play for tolerance to spec.

Not an easy task on the N54, so most likely the dealer is not going to do anything about it until something breaks.

Like Mike mentioned already, perhaps some amount of turbo whine is considered OK.

Mine whine definitely isn't nearly as loud as the clip from youtube that someone had posted(forgot his handle). And it literally goes away after a few minutes of driving..........

I'm thinking that a little whine is okay, just like a little rattle of the wastegates are okay as well........As long as it doesn't turn heads......LOL.

Ilma · 07-09-2009, 10:28 PM

Quote:

Originally Posted by cstmx_ryder

Mine whine definitely isn't nearly as loud as the clip from youtube that someone had posted(forgot his handle). And it literally goes away after a few minutes of driving..........

I'm thinking that a little whine is okay, just like a little rattle of the wastegates are okay as well........As long as it doesn't turn heads......LOL.

Mine has progressed from cold engine whine, to also being there when the engine is warm.......but much more muted on a hot engine and you really have to listen for it.....no one seems to notice it unless I point it out to them.

My private BMW mechanic heard it and said not to worry about it just yet.

The dealer drove it and agreed that it is louder than it should be but needed more time to diagnose it further.

Unless they measure the shaft play or visually inspect the compressor blades, it's hard to accept the sound as normal.

However, more and more people seem to be posting that they get this noise...

07-09-2009, 01:35 PM	#1
slammed335i Private First Class 51 Rep 172 Posts Drives: bmw 335i Join Date: Jun 2009 Location: new york iTrader: (0)	Cold engine whine... I have a 2008 335i with a JB3...and If I drive off with a cold engine like going to work I hear a whine.this is the 3rd day I heard it....what the fuk !!!!
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07-09-2009, 01:57 PM	#3
cn555ic 441 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	Do you often drive the car WOT while the car is not warmed?
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07-09-2009, 02:50 PM	#4
lpphreakx06 Professional Moose Racer 316 Rep 7,509 Posts Drives: SG 335i E92 RIP + 2015 SS M3 Join Date: Jul 2008 Location: Bellevue, Wa iTrader: (25)	Does it sound kind of like a whistle? __________________ Visit my blog anytime: http://www.sfpayments.com BMW Dream Team PNW Chapter, member #1 \|HP Autowerks \| AR DESIGN \| BMW PERFORMANCE \| STOP TECH \| Volk Racing\| AMS \| ARKYM
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07-09-2009, 02:55 PM	#5
Xander I'm new 8 Rep 255 Posts Drives: 997 Turbo, F80 M3, CC & Yukon Join Date: Jan 2009 Location: Buffalo, NY iTrader: (4)	I have this sound when it's cold. I never drive it hard when it's cold. definitely turbo sound. Some of my friend's 335's do it too, none of them have really become any worse since i noticed it a few months ago. X...
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07-09-2009, 05:27 PM	#6
cbad335 Lieutenant Colonel 62 Rep 1,736 Posts Drives: '09 E92 335i Join Date: Jan 2008 Location: Cardiff-by-the-Sea, CA iTrader: (17) Garage List 2009 BMW 335i Coupe [7.34]	I also have the police siren sound when the engine is cold; although, not nearly as loud as one of the videos I heard. I never romp the car when it's cold and have a little over 15K on the clock. The car still runs great so I'm not too worried about it. Time will tell. __________________ \| 6MT \| ZSP \| ZPP \|
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07-09-2009, 06:11 PM	#8
cstmx_ryder Colonel 164 Rep 2,875 Posts Drives: A metal box with a roundel Join Date: Jul 2007 Location: Portland, OR iTrader: (2)	I have the same whine like sound also, but only on cold start up, goes away after the car warms up a little............The dealership double checked all the connections and all is good. Guess I'm one of the few that has this problem......... __________________ '08 AW E90 335i PROcede V5 \| BMS DCI \| RR DPs \| ETS FMIC \| FORGE DVs \| Stett CP \| Vanguard \| PSS10
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07-09-2009, 06:28 PM	#9
I335 Brigadier General 123 Rep 4,249 Posts Drives: '08 335i Coupe Join Date: Jan 2008 Location: New England iTrader: (11)	How many miles on the car and for how many miles has the JB been on? I have about 15K on mine with absolutely no whine. I do get some lurching when it's cold but that only lasts for the first 1st & 2nd gear shifts and I really go easy on it until it warms up a bit. I think cn555ic has a very valid question - do you get on the throttle often when it's cold?
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