Flywheel chatter

Sigma 3 · 02-18-2011, 01:15 PM

I have 50k on a bone stock 335. I have noticed what sounds like flywheel chatter shifting from 1-2, somtimes 2-3, and occasionaly at idle. I dont think its the throw out bearing as the sound that makes is different. Anybody have heard this before? The sound can best be decribed as a diesel engine. The shifts are at low speeds. TIA

boostd92 · 02-18-2011, 01:29 PM

Most likely wastegate rattle.

Sigma 3 · 02-18-2011, 03:57 PM

Ehh I would hope so ,but the sound is at its worse when engaging or dis engaging the clutch.

E36graduate · 02-19-2011, 10:24 AM

drive line slack, clutch chatter, etc....my e46 m3 did the same, sometimes very loud and was still running fine at 125,000 miles. Try this....start the car, take it out of gear and take your foot off the clutch and shut off the engine and see if you get that rattle as the engine stops. Now do the opposite and turn off the car with the clutch pedal pushed in...it should not be as loud, but it will tell you if the noise is clutch related. I believe my E90 has similar drive line noises as my m3, but not as loose and rattly.

Litos · 02-19-2011, 10:25 AM

^^^ great advice

zsapphire7 · 02-19-2011, 12:12 PM

i get this noise too. Is it supposed to be normal? or could it mean a loose clutch?

E36graduate · 02-20-2011, 10:48 AM

don't know if a clutch can be loose or not, however most of all my BMW's (m3 and 335) and Audi S4 had this clutch/flywheel type rattle, especially when you shut off the engine without the clutch engaged. I am told the slack in the drive line is engineered into the car. If you ever take off your shifter boot and all that insulation below it where you can see down to the ground...you will easily hear that slack. I chased down that rattle on my m3 for months and finally put all the insulation back and just lived with it.

TedRoc · 02-20-2011, 08:33 PM

I had the same issue... I needed a new clutch and fly wheel.

Sigma 3 · 02-20-2011, 11:54 PM

Quote:

Originally Posted by E36graduate

drive line slack, clutch chatter, etc....my e46 m3 did the same, sometimes very loud and was still running fine at 125,000 miles. Try this....start the car, take it out of gear and take your foot off the clutch and shut off the engine and see if you get that rattle as the engine stops. Now do the opposite and turn off the car with the clutch pedal pushed in...it should not be as loud, but it will tell you if the noise is clutch related. I believe my E90 has similar drive line noises as my m3, but not as loose and rattly.

I tried this and got no rattlle doing either one, But what sounded like a bad turbo or ac compressor

ciomas · 02-21-2011, 04:12 AM

need to try it today. BMW already tried replacing one of my bearings and it didnt help.

E36graduate · 02-21-2011, 01:34 PM

Sigma 3....can you make a sound clip ??? could be a heat shield on your exhaust?

e9X · 04-24-2011, 09:31 AM

My e90 330i 6 speed does this too.
Mostly noticeable during idle but it goes away when clutch is depressed.
They call it normal - the flywheel chatter.
I complained about it with the dealer and under the warranty they replaced my clutch.
Unfortunately, when i got the car back the rattle is there and it didn't make any difference whatsoever.
The car still runs good and so far I haven't had any problems with it in general.
I see a lot of people saying that this is normal on 6 speed manual cars...

02-18-2011, 01:15 PM	#1
Sigma 3 First Lieutenant 20 Rep 340 Posts Drives: A few things Join Date: Jun 2009 Location: Tri cities iTrader: (1)	Flywheel chatter I have 50k on a bone stock 335. I have noticed what sounds like flywheel chatter shifting from 1-2, somtimes 2-3, and occasionaly at idle. I dont think its the throw out bearing as the sound that makes is different. Anybody have heard this before? The sound can best be decribed as a diesel engine. The shifts are at low speeds. TIA __________________ In the land of the blind the man with one eye is King
	Appreciate 0 Tweet Quote

02-18-2011, 01:29 PM	#2
boostd92 Captain 62 Rep 759 Posts Drives: '11 E92 M-Sport Join Date: Jun 2009 Location: Chicago, IL iTrader: (1) Garage List 2011 BMW 335i M-Spo ... [7.26]	Most likely wastegate rattle.
	Appreciate 0 Quote

02-18-2011, 03:57 PM	#3
Sigma 3 First Lieutenant 20 Rep 340 Posts Drives: A few things Join Date: Jun 2009 Location: Tri cities iTrader: (1)	Ehh I would hope so ,but the sound is at its worse when engaging or dis engaging the clutch. __________________ In the land of the blind the man with one eye is King
	Appreciate 0 Quote

02-19-2011, 10:24 AM	#4
E36graduate Lieutenant 58 Rep 512 Posts Drives: 2013 335i M-Sport 6MT Join Date: Nov 2010 Location: Southeastern MASS iTrader: (0)	drive line slack, clutch chatter, etc....my e46 m3 did the same, sometimes very loud and was still running fine at 125,000 miles. Try this....start the car, take it out of gear and take your foot off the clutch and shut off the engine and see if you get that rattle as the engine stops. Now do the opposite and turn off the car with the clutch pedal pushed in...it should not be as loud, but it will tell you if the noise is clutch related. I believe my E90 has similar drive line noises as my m3, but not as loose and rattly. __________________ 2008 335xi - 6MT - BMS JB4 G5i - BMS DCI - BMS OCC - BMS WW Meth - Spec Stage 2+ - Spec SMFW - 19" MVR Magnum's - KW V1's - TMS 12.5+20mm Spacers
	Appreciate 0 Quote

02-19-2011, 10:25 AM	#5
Litos Banned 220 Rep 2,991 Posts Drives: 2012 Challenger RT Junk Join Date: Dec 2010 Location: Houston/Pearland iTrader: (1)	^^^ great advice
	Appreciate 0 Quote

02-19-2011, 12:12 PM	#6
zsapphire7 Colonel 104 Rep 2,368 Posts Drives: 08 e92 M3 Join Date: Oct 2007 Location: SF Bay Area iTrader: (21)	i get this noise too. Is it supposed to be normal? or could it mean a loose clutch?
	Appreciate 0 Quote

02-20-2011, 10:48 AM	#7
E36graduate Lieutenant 58 Rep 512 Posts Drives: 2013 335i M-Sport 6MT Join Date: Nov 2010 Location: Southeastern MASS iTrader: (0)	don't know if a clutch can be loose or not, however most of all my BMW's (m3 and 335) and Audi S4 had this clutch/flywheel type rattle, especially when you shut off the engine without the clutch engaged. I am told the slack in the drive line is engineered into the car. If you ever take off your shifter boot and all that insulation below it where you can see down to the ground...you will easily hear that slack. I chased down that rattle on my m3 for months and finally put all the insulation back and just lived with it. __________________ 2008 335xi - 6MT - BMS JB4 G5i - BMS DCI - BMS OCC - BMS WW Meth - Spec Stage 2+ - Spec SMFW - 19" MVR Magnum's - KW V1's - TMS 12.5+20mm Spacers
	Appreciate 0 Quote

02-20-2011, 08:33 PM	#8
TedRoc Private First Class 102 Rep 140 Posts Drives: 2021 M850i Gran Coupe Join Date: Jan 2009 Location: Columbus, Ohio iTrader: (1)	I had the same issue... I needed a new clutch and fly wheel. __________________ 2021 M850i Gran Coupe Mineral White Sold Cars- 2018 M3 F80 ZCP Yas Marina / 2017 M3 F80 ZCP/ 2014 435i Sport Silver / 2009 335i E90 LCI AW / 2005 535i Silver / 2002 323ci Black Dinan Stage 3
	Appreciate 0 Quote

02-21-2011, 04:12 AM	#10
ciomas Captain 30 Rep 679 Posts Drives: M4 Join Date: Feb 2010 Location: 3city PL iTrader: (0)	need to try it today. BMW already tried replacing one of my bearings and it didnt help. __________________ 335 - Öhlins//Swift//M3 front suspension//M3 subframe bushes//Quaife LSD//AR Design Catless//Forge Intercooler//Alcon BBK//Goodridge//AFE//RPI//Fenders - SOLD M4-Mineral Gray/Full Shakir Orange/DCT/M Ceramic/M Adaptive Susp.
	Appreciate 0 Quote

02-21-2011, 01:34 PM	#11
E36graduate Lieutenant 58 Rep 512 Posts Drives: 2013 335i M-Sport 6MT Join Date: Nov 2010 Location: Southeastern MASS iTrader: (0)	Sigma 3....can you make a sound clip ??? could be a heat shield on your exhaust? __________________ 2008 335xi - 6MT - BMS JB4 G5i - BMS DCI - BMS OCC - BMS WW Meth - Spec Stage 2+ - Spec SMFW - 19" MVR Magnum's - KW V1's - TMS 12.5+20mm Spacers
	Appreciate 0 Quote

04-24-2011, 09:31 AM	#12
e9X enthusiast 34 Rep 418 Posts Drives: 2006 TiAg 330i sport package Join Date: Mar 2009 Location: chicago, Il. iTrader: (3)	My e90 330i 6 speed does this too. Mostly noticeable during idle but it goes away when clutch is depressed. They call it normal - the flywheel chatter. I complained about it with the dealer and under the warranty they replaced my clutch. Unfortunately, when i got the car back the rattle is there and it didn't make any difference whatsoever. The car still runs good and so far I haven't had any problems with it in general. I see a lot of people saying that this is normal on 6 speed manual cars...
	Appreciate 0 Quote