That "normal" knocking sound when shutting off the engine...

MilitaryE89 · 10-26-2009, 02:33 PM

Am I alone in my concern over this? I mean, I know basically why this happens...counter-weights rotating in different directions kinda clattering together, but man, it just sounds rough. It kinda sounds like junk when you shut if off and all this noise comes from the engine...kinda embarrassing when people turn and cock their heads at why a car like this makes that noise. Essentially, what I am getting at is whether or not I am alone with the noisy car? Anyone else experience this and perhaps taken it in to have it examined? This is on a 30i...don't know if the 35i is plagued with this but I would assume so

Otago · 10-27-2009, 01:10 AM

I am manual 30i owner, no such sound you mentioned when turn off the engine.

Joey_T · 10-27-2009, 04:23 AM

Put the clutch in when you shut the engine off and the noise will go away...

MilitaryE89 · 10-27-2009, 02:42 PM

well hell...thanks Joey T...never would have figured that out, as simple as it was.

Joey_T · 10-28-2009, 02:44 AM

Z4 Beemer · 10-28-2009, 05:05 PM

Must try that, as I noticed mine makes a bit of a clunk when you press the STOP button.

VM1 · 10-28-2009, 05:41 PM

I have the same problem, with 3.0

GT Sounds · 10-28-2009, 11:28 PM

Like others, when I turn my car off, I'm pressing on the clutch while I'm putting the car into first and turning on the e-break before pressing the start/stop button. Never heard a knocking noise from the engine.

Roadstergal · 10-29-2009, 07:49 AM

Of course you are going to hear clunking if you turn off the car while in gear. You would get the same noise if you stalled out or stopped at a light without engaging the clutch or throwing it in neutral.

MilitaryE89 · 10-29-2009, 11:31 AM

the "clunk" is heard if you are in neutral (manual trans) and shut the engine off without depressing the clutch. its more of a heavy object rattle. Never was one to put the car in gear when i shut it off. just seems to me that it is putting additional stress on the trans, however minimal, that i don't need since everything is flat right around where i live. but as for my rattle...depressing the clutch definitly does the trick to eleminate it!

10-26-2009, 02:33 PM	#1
MilitaryE89 Private First Class 8 Rep 188 Posts Drives: 2008 328i, 2009 sDrive30i Join Date: May 2009 Location: APO, AE iTrader: (0)	That "normal" knocking sound when shutting off the engine... Am I alone in my concern over this? I mean, I know basically why this happens...counter-weights rotating in different directions kinda clattering together, but man, it just sounds rough. It kinda sounds like junk when you shut if off and all this noise comes from the engine...kinda embarrassing when people turn and cock their heads at why a car like this makes that noise. Essentially, what I am getting at is whether or not I am alone with the noisy car? Anyone else experience this and perhaps taken it in to have it examined? This is on a 30i...don't know if the 35i is plagued with this but I would assume so
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10-27-2009, 01:10 AM	#2
Otago Second Lieutenant 24 Rep 244 Posts Drives: 09 Z4 sDrive 30i manual Join Date: May 2009 Location: Hong Kong iTrader: (0)	I am manual 30i owner, no such sound you mentioned when turn off the engine.
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10-27-2009, 04:23 AM	#3
Joey_T That's me... 17 Rep 234 Posts Drives: 135i Join Date: Feb 2008 Location: Europe iTrader: (0)	Put the clutch in when you shut the engine off and the noise will go away...
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10-27-2009, 02:42 PM	#4
MilitaryE89 Private First Class 8 Rep 188 Posts Drives: 2008 328i, 2009 sDrive30i Join Date: May 2009 Location: APO, AE iTrader: (0)	well hell...thanks Joey T...never would have figured that out, as simple as it was.
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10-28-2009, 02:44 AM	#5
Joey_T That's me... 17 Rep 234 Posts Drives: 135i Join Date: Feb 2008 Location: Europe iTrader: (0)
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10-28-2009, 05:05 PM	#6
Z4 Beemer Colonel 85 Rep 2,353 Posts Drives: 2009 Z4 sDrive 23i Join Date: Oct 2005 Location: Glasgow, Scotland, UK iTrader: (0) Garage List 2006 E92 [0.00] 2004 Z4 2.2i [8.00]	Must try that, as I noticed mine makes a bit of a clunk when you press the STOP button. __________________ E89 Z4 sDrive 23i... for the more discerning driver
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10-28-2009, 05:41 PM	#7
VM1 Registered 0 Rep 1 Posts Drives: Z4 3.0 (2009) Join Date: Oct 2009 Location: Italy iTrader: (0)	I have the same problem, with 3.0
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10-28-2009, 11:28 PM	#8
GT Sounds Enlisted Member 0 Rep 32 Posts Drives: Z4 Join Date: Jul 2009 Location: NJ iTrader: (0)	Like others, when I turn my car off, I'm pressing on the clutch while I'm putting the car into first and turning on the e-break before pressing the start/stop button. Never heard a knocking noise from the engine.
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10-29-2009, 07:49 AM	#9
Roadstergal First Lieutenant 27 Rep 360 Posts Drives: 2010 Z4 35i Join Date: Feb 2009 Location: USA - East Coast iTrader: (0)	Of course you are going to hear clunking if you turn off the car while in gear. You would get the same noise if you stalled out or stopped at a light without engaging the clutch or throwing it in neutral.
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10-29-2009, 11:31 AM	#10
MilitaryE89 Private First Class 8 Rep 188 Posts Drives: 2008 328i, 2009 sDrive30i Join Date: May 2009 Location: APO, AE iTrader: (0)	the "clunk" is heard if you are in neutral (manual trans) and shut the engine off without depressing the clutch. its more of a heavy object rattle. Never was one to put the car in gear when i shut it off. just seems to me that it is putting additional stress on the trans, however minimal, that i don't need since everything is flat right around where i live. but as for my rattle...depressing the clutch definitly does the trick to eleminate it!
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