Strange Whirring Sound...not spooling.

TreDirtyFive · 06-02-2009, 01:49 PM

Is anyone experiencing anything like this? It happens more often after startup driving but I'm beginning to hear it after the car is warmed up as well. It sounds like a tranny whirring perhaps but I can't be sure. It's definitely not the higher pitched turbo spooling sound more like a whirring that builds in volume on more throttle. Thanks!

samps · 06-02-2009, 02:07 PM

I get that too (except not on throttle). I have no idea what it is, and I couldn't replicate the sound at the dealer. It's intermittent for me. I hope someone else can chime in and advise.

pronacyk3 · 06-02-2009, 04:30 PM

See this thread.

http://www.e90post.com/forums/showthread.php?t=263075

Anything at all similar to this video?

TreDirtyFive · 06-02-2009, 05:50 PM

exactly that noise in the video!

TreDirtyFive · 06-02-2009, 06:06 PM

Thanks for the links...

A418t81 · 06-02-2009, 06:42 PM

That would be bearing noise from your turbos. Not a great sign. How many miles on your car?

TreDirtyFive · 06-02-2009, 06:45 PM

35K!

Kbueno · 06-02-2009, 06:50 PM

Ouch...take it to Dealer

TreDirtyFive · 06-02-2009, 08:01 PM

The consensus seems to be that it may be a damaged turbo while others are saying it sounds normal

pronacyk3 · 06-02-2009, 09:49 PM

Haven't taken it to the dealer yet because it is almost inaudible when I put the stock airbox in. Also, you can only hear it during cold starts / warmup. Not something you can easily replicate after a 10 mile drive to the dealership. Also, someone mentioned that the BMW technicians heard the noise as well but stated it as being normal? I will certainly bring it up the next time I take it in for service (along with a giant list of other issues like window/sunroof creaking, steering column noise, wastegate rattle, etc).

smdandb2 · 06-02-2009, 10:59 PM

Its a sign of turbo failure.

Anyone who says that kind of noise is normal is insane. None of my turbo'd cars have EVER made that noise even with NO FILTER element, nor even the drag cars I have tuned. The only time I heard that noise on one of my cars is my Mazda, and it has a hard time building boost now. New turbo is here, just need to fab up a new manifold for MOAR BOOOOSTS!

You have a 1.8T and what seems like a 2.0T... bet they never made that noise normally.

Was/is your car modded with more boost?

If so, thats the risk in running the turbo wayy outside of its compressor map.

TreDirtyFive · 06-03-2009, 01:49 PM

I have noticed that it is almost gone as the car heats up...Im on the newest JB3 on Map 5. I don't remember the noise on my JB+...oh well, who knows.

marty_mcfly · 06-03-2009, 01:55 PM

have the same thing. as the car gets warmed up though, the noise is less audible

A418t81 · 06-03-2009, 04:10 PM

Quote:

Originally Posted by TreDirtyFive

I have noticed that it is almost gone as the car heats up...Im on the newest JB3 on Map 5. I don't remember the noise on my JB+...oh well, who knows.

I've noticed that a lot of N54s have some whine to them when the oil/engine is cold. If it goes away once it's heated up, just keep an eye on it. I've seen bone stock N54s with 30k on them making some bearing noise. It's easy to get just about any auto to do it. Just stall it up a little and with the hood popped you can hear the extra noise quite well.

ericsmc83 · 06-03-2009, 04:25 PM

I tried getting a video recording of mine today, but the sound is so soft that the camera mic couldn't pick it up.

I did notice that the sound persisted even when the oil had warmed to operating temps, but at an even softer level. After a couple quick romps at max boost, the sound seemed to disappear completely.

I'll definitely keep an ear open in case it gets worse over time.

lpphreakx06 · 06-03-2009, 04:58 PM

I can try to film mine. Eric, you rode in my car was it louder or about the same as your noise?

ericsmc83 · 06-03-2009, 11:55 PM

I don't remember hearing the sound in yours, so it's prolly similar.

06-02-2009, 01:49 PM	#1
TreDirtyFive Major 253 Rep 1,334 Posts Drives: X3 M40i Join Date: Jun 2008 Location: Los Angeles, CA iTrader: (11)	Strange Whirring Sound...not spooling. Is anyone experiencing anything like this? It happens more often after startup driving but I'm beginning to hear it after the car is warmed up as well. It sounds like a tranny whirring perhaps but I can't be sure. It's definitely not the higher pitched turbo spooling sound more like a whirring that builds in volume on more throttle. Thanks! __________________ X3 M40i G01, M235i F22, 335 F30 MSport, 135 DCT, 335 E92, Audi A3
	Appreciate 0 Tweet Quote

06-02-2009, 02:07 PM	#2
samps Captain 26 Rep 671 Posts Drives: Transit Join Date: May 2008 Location: GVA iTrader: (2)	I get that too (except not on throttle). I have no idea what it is, and I couldn't replicate the sound at the dealer. It's intermittent for me. I hope someone else can chime in and advise.
	Appreciate 0 Quote

06-02-2009, 04:30 PM	#3
pronacyk3 Private 5 Rep 84 Posts Drives: f Join Date: Mar 2009 Location: US iTrader: (3)	See this thread. http://www.e90post.com/forums/showthread.php?t=263075 Anything at all similar to this video?
	Appreciate 0 Quote

06-02-2009, 05:50 PM	#4
TreDirtyFive Major 253 Rep 1,334 Posts Drives: X3 M40i Join Date: Jun 2008 Location: Los Angeles, CA iTrader: (11)	exactly that noise in the video! __________________ X3 M40i G01, M235i F22, 335 F30 MSport, 135 DCT, 335 E92, Audi A3
	Appreciate 0 Quote

06-02-2009, 06:06 PM	#5
TreDirtyFive Major 253 Rep 1,334 Posts Drives: X3 M40i Join Date: Jun 2008 Location: Los Angeles, CA iTrader: (11)	Thanks for the links... __________________ X3 M40i G01, M235i F22, 335 F30 MSport, 135 DCT, 335 E92, Audi A3
	Appreciate 0 Quote

06-02-2009, 06:42 PM	#6
A418t81 Lieutenant Colonel 294 Rep 1,515 Posts Drives: Ever changing fleet Join Date: May 2007 Location: Alabama iTrader: (1) Garage List 2013 335is [0.00]	That would be bearing noise from your turbos. Not a great sign. How many miles on your car? __________________ 23 iX M60, 24 GT3 RS Weissach, 22 Rivian R1T, 23 RS3, 13 E92 M3 Competition: Akra Evo, KW V3, etc
	Appreciate 0 Quote

06-02-2009, 06:45 PM	#7
TreDirtyFive Major 253 Rep 1,334 Posts Drives: X3 M40i Join Date: Jun 2008 Location: Los Angeles, CA iTrader: (11)	35K! __________________ X3 M40i G01, M235i F22, 335 F30 MSport, 135 DCT, 335 E92, Audi A3
	Appreciate 0 Quote

06-02-2009, 06:50 PM	#8
Kbueno Lieutenant Colonel 99 Rep 1,712 Posts Drives: F82 Join Date: Jan 2007 Location: California iTrader: (5)	Ouch...take it to Dealer
	Appreciate 0 Quote

06-02-2009, 08:01 PM	#9
TreDirtyFive Major 253 Rep 1,334 Posts Drives: X3 M40i Join Date: Jun 2008 Location: Los Angeles, CA iTrader: (11)	The consensus seems to be that it may be a damaged turbo while others are saying it sounds normal __________________ X3 M40i G01, M235i F22, 335 F30 MSport, 135 DCT, 335 E92, Audi A3
	Appreciate 0 Quote

06-02-2009, 09:49 PM	#10
pronacyk3 Private 5 Rep 84 Posts Drives: f Join Date: Mar 2009 Location: US iTrader: (3)	Haven't taken it to the dealer yet because it is almost inaudible when I put the stock airbox in. Also, you can only hear it during cold starts / warmup. Not something you can easily replicate after a 10 mile drive to the dealership. Also, someone mentioned that the BMW technicians heard the noise as well but stated it as being normal? I will certainly bring it up the next time I take it in for service (along with a giant list of other issues like window/sunroof creaking, steering column noise, wastegate rattle, etc).
	Appreciate 0 Quote

06-02-2009, 10:59 PM	#11
smdandb2 this space left intentionally blank 15 Rep 293 Posts Drives: Blue One Join Date: Jan 2008 Location: BYU iTrader: (0)	Its a sign of turbo failure. Anyone who says that kind of noise is normal is insane. None of my turbo'd cars have EVER made that noise even with NO FILTER element, nor even the drag cars I have tuned. The only time I heard that noise on one of my cars is my Mazda, and it has a hard time building boost now. New turbo is here, just need to fab up a new manifold for MOAR BOOOOSTS! You have a 1.8T and what seems like a 2.0T... bet they never made that noise normally. Was/is your car modded with more boost? If so, thats the risk in running the turbo wayy outside of its compressor map.
	Appreciate 0 Quote

06-03-2009, 01:49 PM	#12
TreDirtyFive Major 253 Rep 1,334 Posts Drives: X3 M40i Join Date: Jun 2008 Location: Los Angeles, CA iTrader: (11)	I have noticed that it is almost gone as the car heats up...Im on the newest JB3 on Map 5. I don't remember the noise on my JB+...oh well, who knows. __________________ X3 M40i G01, M235i F22, 335 F30 MSport, 135 DCT, 335 E92, Audi A3
	Appreciate 0 Quote

06-03-2009, 01:55 PM	#13
marty_mcfly Banned 97 Rep 1,209 Posts Drives: ??? Join Date: Nov 2008 Location: Cali iTrader: (3)	have the same thing. as the car gets warmed up though, the noise is less audible
	Appreciate 0 Quote

06-03-2009, 04:25 PM	#15
ericsmc83 Captain 65 Rep 986 Posts Drives: 08 E92 335i MT Join Date: Sep 2007 Location: Las Vegas, NV iTrader: (9)	I tried getting a video recording of mine today, but the sound is so soft that the camera mic couldn't pick it up. I did notice that the sound persisted even when the oil had warmed to operating temps, but at an even softer level. After a couple quick romps at max boost, the sound seemed to disappear completely. I'll definitely keep an ear open in case it gets worse over time. __________________ 2008 E92 MT \| VTT Stage 2+ 20T \| VTT Inlets \| JB4 MHD E85 \| Fuel-It Stage 3 LPFP w/FPR and Return \| BMS PI \| AR DP \| AE Quad Exhaust \| Helix FMIC \| ER CP \| Tial BOV \| DCI \| AR OCC \| Spec Stage 3+ \| SMFW
	Appreciate 0 Quote

06-03-2009, 04:58 PM	#16
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)	I can try to film mine. Eric, you rode in my car was it louder or about the same as your noise? __________________ 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
	Appreciate 0 Quote

06-03-2009, 11:55 PM	#17
ericsmc83 Captain 65 Rep 986 Posts Drives: 08 E92 335i MT Join Date: Sep 2007 Location: Las Vegas, NV iTrader: (9)	I don't remember hearing the sound in yours, so it's prolly similar. __________________ 2008 E92 MT \| VTT Stage 2+ 20T \| VTT Inlets \| JB4 MHD E85 \| Fuel-It Stage 3 LPFP w/FPR and Return \| BMS PI \| AR DP \| AE Quad Exhaust \| Helix FMIC \| ER CP \| Tial BOV \| DCI \| AR OCC \| Spec Stage 3+ \| SMFW
	Appreciate 0 Quote