sound when turning car off - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

ExREX · 05-01-2010, 05:28 PM

Hi All

My 135 has a funny rattle sound from the engine/exhaust when turning off. Anyone else have this?

G

Taymaishu · 05-01-2010, 06:41 PM

Any way you can tape it?

banglemangle · 05-01-2010, 07:04 PM

Mine does the same, both off and on!
Some will say its the clutch, but its not (makes no difference whether the pedal is depressed or not.

I think there are 2 possibilities:

1. Slightly loose heat shielding on / near exhaust system (my turbo Golf did the same thing)
2. Wobbly wastegates (some US cars suffer from this)

Bdh821 · 05-01-2010, 07:13 PM

I'm pretty sure all BMWs do it. I heard its the vaccum baffel in the muffler.

alik01 · 05-01-2010, 07:57 PM

Mine does it too, freaked out a few months ago, cos I couldn't remember whether it was there from new, the dealer charged 2 hours of labour to check everything and make sure nothing was loose.

Still not sure what it is, but sounds like an exhaust rattle to me.

Jeef Beef · 05-01-2010, 09:02 PM

Had the same sound since the car was new.

penny · 05-01-2010, 10:33 PM

Manual or auto? Make sure you depress clutch when turning off.

ExREX · 05-02-2010, 06:21 AM

manual, will check tomorrow re clutch in making a diff.

thanks for the feedback. sounds common. will be interesting to know if the 125s do it.

i have come to the conclusion that it sounds like a diesel with a throaty exhaust when it shuts down!

Franco · 05-02-2010, 05:46 PM

Mine also does this , especially after I drive it a little hard. I thought it was the fan continuing to cool down the engine but I may be wrong?

HondaGoneRogue · 05-02-2010, 06:15 PM

It's the clutch. Mine has done it since day one. Hefty clutches do that I was told. BMW also said it was normal. (Take that with a grain of salt lol.)

Zuzu · 05-02-2010, 09:05 PM

Quote:

Originally Posted by HondaGoneRogue

It's the clutch. Mine has done it since day one. Hefty clutches do that I was told. BMW also said it was normal. (Take that with a grain of salt lol.)

100%... Depress the clutch whilst switching off as others have posted and problem solved.

And to prove this point, NO autos have this issue.

ExREX · 05-02-2010, 09:38 PM

confirmed test this morning clutch in and all OK

alik01 · 05-02-2010, 10:29 PM

Sweet! Does anyone know if not depressing the clutch can cause damage?

penny · 05-02-2010, 10:57 PM

The manual actually says to have it in gear before turning off. So, obviously clutch has to be depressed. I doubt it hurts transmission.

alik01 · 05-02-2010, 11:35 PM

That's good, penny. Cos all this time I just put it in neutral and then switch the engine off.

Zuzu · 05-03-2010, 06:14 AM

Quote:

Originally Posted by alik01

Sweet! Does anyone know if not depressing the clutch can cause damage?

Not at all...

The noise on shutting down the engine without depressing the clutch is only your clutch release(throwout) bearing rattling as there is no load at the time in neutral with the clutch disengaged.
The bearing reduces friction between the pressure plate levers and the release fork to allow a smooth disengagement of the clutch plate during gear changes.

ncutinelli · 05-03-2010, 06:27 AM

Quote:

Originally Posted by ExREX

manual, will check tomorrow re clutch in making a diff.

thanks for the feedback. sounds common. will be interesting to know if the 125s do it.

i have come to the conclusion that it sounds like a diesel with a throaty exhaust when it shuts down!

yep my 125i makes same noise .... clutch in = no noise

alik01 · 05-03-2010, 08:36 AM

Thanks for the explaination Zuzu, much appreciated!

TimMc · 05-03-2010, 09:28 PM

Yeah I've got it.
Gears rattle against each other when there is no load. You should hear how noisy the gearboxes can be with idling BMW race engines with big cams and rough idle.

555 · 05-03-2010, 11:54 PM

'Gearbox chatter' - so far the 2 cars I've had this in are the 135i and 350z

SlicktopTTZ · 05-04-2010, 12:41 AM

Quote:

Originally Posted by 555

'Gearbox chatter' - so far the 2 cars I've had this in are the 135i and 350z

C5 Z06 does it too.

To be honest I kind of like the sound as it shuts down.....

05-01-2010, 05:28 PM	#1
ExREX Private First Class Drives: 135i & x3 30d Join Date: Nov 2009 Location: Sydney, Australia Posts: 118 iTrader: (0)	sound when turning car off Hi All My 135 has a funny rattle sound from the engine/exhaust when turning off. Anyone else have this? G
	Tweet

05-01-2010, 09:02 PM	#6
Jeef Beef Lord Captain Commander Drives: a sleeper Join Date: Oct 2009 Location: Sydney, Australia Posts: 3,020 iTrader: (0)	Had the same sound since the car was new. __________________ E82 135i M-sport: SGM/6MT/Black PROcede V5 \| BMS DCI \| AR Catless DPs \| BMW PE \| ER CP \| HKS BOV \| BMW SSK \| KW V1 coilovers \| Dunlop Direzza Star Specs \| GTC-CX Matte Black 18" \| GP Thunder 7500K \| Kerscher CF Lip

05-01-2010, 10:33 PM	#7
penny Captain Drives: '08 135i (sold) Join Date: May 2008 Location: Las Colinas Posts: 841 iTrader: (2)	Manual or auto? Make sure you depress clutch when turning off. __________________ '08 135i.

05-02-2010, 06:15 PM	#10
HondaGoneRogue They like my Swag... Drives: 08 AW 135i Join Date: Aug 2008 Location: Germany Posts: 3,471 iTrader: (4) Garage List 2008 135i [4.33]	It's the clutch. Mine has done it since day one. Hefty clutches do that I was told. BMW also said it was normal. (Take that with a grain of salt lol.) __________________ 2008 AW 135i, Whats a mod?

05-02-2010, 10:57 PM	#14
penny Captain Drives: '08 135i (sold) Join Date: May 2008 Location: Las Colinas Posts: 841 iTrader: (2)	The manual actually says to have it in gear before turning off. So, obviously clutch has to be depressed. I doubt it hurts transmission. __________________ '08 135i.

05-01-2010, 06:41 PM	#2
Taymaishu Banned Drives: I love massive black cocks Join Date: Jul 2009 Location: in my ass and around my mouth Posts: 3,018 iTrader: (0) Garage List 2009 125i [2.75]	Any way you can tape it?

05-01-2010, 07:04 PM	#3
banglemangle Lieutenant Drives: bmw135 Join Date: Feb 2010 Location: Somewhere on the East Coast of Australia Posts: 577 iTrader: (0)	Mine does the same, both off and on! Some will say its the clutch, but its not (makes no difference whether the pedal is depressed or not. I think there are 2 possibilities: 1. Slightly loose heat shielding on / near exhaust system (my turbo Golf did the same thing) 2. Wobbly wastegates (some US cars suffer from this)

05-01-2010, 07:13 PM	#4
Bdh821 Major Drives: 08 Montego 135i, 06 330xi Join Date: Feb 2008 Location: MA Posts: 1,252 iTrader: (3)	I'm pretty sure all BMWs do it. I heard its the vaccum baffel in the muffler.

05-01-2010, 07:57 PM	#5
alik01 Lieutenant Colonel Drives: Slowly & Responsibly Join Date: Nov 2009 Location: Darwin, Australia Posts: 1,780 iTrader: (0)	Mine does it too, freaked out a few months ago, cos I couldn't remember whether it was there from new, the dealer charged 2 hours of labour to check everything and make sure nothing was loose. Still not sure what it is, but sounds like an exhaust rattle to me.

05-02-2010, 06:21 AM	#8
ExREX Private First Class Drives: 135i & x3 30d Join Date: Nov 2009 Location: Sydney, Australia Posts: 118 iTrader: (0)	manual, will check tomorrow re clutch in making a diff. thanks for the feedback. sounds common. will be interesting to know if the 125s do it. i have come to the conclusion that it sounds like a diesel with a throaty exhaust when it shuts down!

05-02-2010, 05:46 PM	#9
Franco Private Drives: TiAg E87 130i M Sport Join Date: Jan 2009 Location: Brisbane Posts: 90 iTrader: (0)	Mine also does this , especially after I drive it a little hard. I thought it was the fan continuing to cool down the engine but I may be wrong?

05-02-2010, 09:38 PM	#12
ExREX Private First Class Drives: 135i & x3 30d Join Date: Nov 2009 Location: Sydney, Australia Posts: 118 iTrader: (0)	confirmed test this morning clutch in and all OK

05-02-2010, 10:29 PM	#13
alik01 Lieutenant Colonel Drives: Slowly & Responsibly Join Date: Nov 2009 Location: Darwin, Australia Posts: 1,780 iTrader: (0)	Sweet! Does anyone know if not depressing the clutch can cause damage?

05-02-2010, 11:35 PM	#15
alik01 Lieutenant Colonel Drives: Slowly & Responsibly Join Date: Nov 2009 Location: Darwin, Australia Posts: 1,780 iTrader: (0)	That's good, penny. Cos all this time I just put it in neutral and then switch the engine off.

05-03-2010, 08:36 AM	#18
alik01 Lieutenant Colonel Drives: Slowly & Responsibly Join Date: Nov 2009 Location: Darwin, Australia Posts: 1,780 iTrader: (0)	Thanks for the explaination Zuzu, much appreciated!

05-03-2010, 09:28 PM	#19
TimMc Lieutenant Colonel Drives: 135i SCT N54 Join Date: Aug 2008 Location: Brisbane, Australia Posts: 1,819 iTrader: (0)	Yeah I've got it. Gears rattle against each other when there is no load. You should hear how noisy the gearboxes can be with idling BMW race engines with big cams and rough idle. Last edited by TimMc; 05-04-2010 at 02:35 AM.

05-03-2010, 11:54 PM	#20
555 Doing it for TV! Drives: C63 AMG Join Date: Sep 2008 Location: Melbourne Posts: 170 iTrader: (0)	'Gearbox chatter' - so far the 2 cars I've had this in are the 135i and 350z

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