Knocking Noise, Transmission?

SukSqueezeBangBlo · 11-14-2015, 06:00 PM

I'm having a knocking noise when at idle, but it goes away once the clutch is depressed. Any ideas what this might be ? Also my idle sits at around 500-600 is this normal ? Car has 60k miles, noticed the noise after I bought it.

Thanks.

Video added

FISH22 · 11-14-2015, 06:34 PM

Sounds like the throw out bearing. They're very noisy in this car. Almost a helicopter type noise?

And 500-600 sounds right for the idle.

SukSqueezeBangBlo · 11-15-2015, 08:39 AM

Quote:

Originally Posted by FISH22

Sounds like the throw out bearing. They're very noisy in this car. Almost a helicopter type noise?

And 500-600 sounds right for the idle.

Pretty close to that noise, yeah. that's what I was thinking.

Time Lord · 11-15-2015, 10:03 AM

Throw out bearing

SukSqueezeBangBlo · 11-15-2015, 01:05 PM

Quote:

Originally Posted by Time Lord

Throw out bearing

Is this something that needs to be replaced or rather a slow wear/normal?

lmendz71 · 11-15-2015, 01:45 PM

Mine is exactly the same, I have it for 2 years since I bought the car.

vsix · 11-15-2015, 02:00 PM

Quote:

Originally Posted by FISH22

Sounds like the throw out bearing. They're very noisy in this car. Almost a helicopter type noise?

And 500-600 sounds right for the idle.

It's definately the TOB, have the same "issue" on mine, if it get's to noisy just get it replaced. Just use OEM stuff

kkhurr · 11-15-2015, 07:07 PM

same issue on my car. Is it an easy replacement. DIY? or a bit more complicated than that?

SukSqueezeBangBlo · 11-15-2015, 07:47 PM

Quote:

Originally Posted by kkhurr

same issue on my car. Is it an easy replacement. DIY? or a bit more complicated than that?

It's inside the transmission so it would require pulling the transmission. If you are doing a new clutch it's recommended. So basically the noise is normal in some sense.

kkhurr · 11-16-2015, 04:37 AM

Quote:

Originally Posted by Mattgfx

It's inside the transmission so it would require pulling the transmission. If you are doing a new clutch it's recommended. So basically the noise is normal in some sense.

I see. ok cool. appreciate the response.

vsix · 11-16-2015, 04:48 AM

You're welcome

anom3 · 11-16-2015, 06:12 AM

Yeah its the throw out bearing.

BTW, replacing it wont help.

I had my clutch changed about 20k km ago... Did it right from the moment I drove out of the shop.

vsix · 11-16-2015, 06:44 AM

Quote:

Originally Posted by anom3

Yeah its the throw out bearing.

BTW, replacing it wont help.

I had my clutch changed about 20k km ago... Did it right from the moment I drove out of the shop.

No it'll help, it just get's worster and worster. At badest the TOB sound's like an landing helicopter. Then it's time for replacing that bad boy.
Some NHV is normal, as our cars are high revers hence heat and metal stretching had been on developement already considered, so we have to have play in it and yes that's the reason we have that noise.

As I said, it'll alway's be present in one way or another!
When it get's to loud, just get it replaced...of course you can do a new clutch, when you're anyway at.

thekurgan · 11-16-2015, 09:23 AM

It's NOT the throw out bearing.

To test that, the noise would appear when the clutch is out (pedal down).

What you're (used correctly) hearing is normal.

SukSqueezeBangBlo · 11-16-2015, 10:39 AM

Quote:

Originally Posted by thekurgan

It's NOT the throw out bearing.

To test that, the noise would appear when the clutch is out (pedal down).

What you're (used correctly) hearing is normal.

Hmm ill try to make a video so you can hear the noise. It's like a slight knocking almost. Not the normal chatter the flywheel makes and such.

thekurgan · 11-16-2015, 10:47 AM

Quote:

Originally Posted by Mattgfx

Hmm ill try to make a video so you can hear the noise. It's like a slight knocking almost. Not the normal chatter the flywheel makes and such.

That would be a good idea. The throw out bearing isn't even activated when the clutch is in so it has to be something else.

vsix · 11-16-2015, 11:01 AM

Just do a short vid and we go from there...

SukSqueezeBangBlo · 11-17-2015, 09:06 AM

Quote:

Originally Posted by vsix

Just do a short vid and we go from there...

Video added. the noise is present at idle, then I press the clutch in to make it go away.

thekurgan · 11-17-2015, 10:02 AM

Quote:

Originally Posted by Mattgfx

Video added. the noise is present at idle, then I press the clutch in to make it go away.

Make the video public

SukSqueezeBangBlo · 11-17-2015, 12:19 PM

Quote:

Originally Posted by thekurgan

Make the video public

My bad, should be good now!

thekurgan · 11-17-2015, 01:42 PM

Quote:

Originally Posted by Mattgfx

My bad, should be good now!

That sound is completely normal, every MT owner has it, whether they are careful enough to listen for it, it's there.

SukSqueezeBangBlo · 11-18-2015, 08:18 AM

Quote:

Originally Posted by thekurgan

Quote:

Originally Posted by Mattgfx

My bad, should be good now!

That sound is completely normal, every MT owner has it, whether they are careful enough to listen for it, it's there.

Good to know, I guess it does sound like a helicopter.

11-14-2015, 06:00 PM	#1
SukSqueezeBangBlo Captain 118 Rep 888 Posts Drives: F80 M3 Join Date: Oct 2009 Location: Best Coast iTrader: (1)	I'm having a knocking noise when at idle, but it goes away once the clutch is depressed. Any ideas what this might be ? Also my idle sits at around 500-600 is this normal ? Car has 60k miles, noticed the noise after I bought it. Thanks. Video added __________________ M
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11-14-2015, 06:34 PM	#2
FISH22 Colonel 5403 Rep 2,030 Posts Drives: G80 M3 Competition Join Date: Apr 2012 Location: Chesapeake, VA iTrader: (1) Garage List 2021 BMW M3C [10.00] 2011 BMW M3 [10.00]	Sounds like the throw out bearing. They're very noisy in this car. Almost a helicopter type noise? And 500-600 sounds right for the idle.
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11-15-2015, 10:03 AM	#4
Time Lord BimmerPost Supporting Vendor 125 Rep 698 Posts Drives: 2018 F80 ZCP Join Date: Mar 2011 Location: NW Florida iTrader: (5)	Throw out bearing
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11-15-2015, 01:45 PM	#6
lmendz71 Private First Class 30 Rep 146 Posts Drives: 2008 M3 Sedan Interlagos Blue Join Date: Jul 2011 Location: CA,USA iTrader: (0)	Mine is exactly the same, I have it for 2 years since I bought the car.
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11-15-2015, 07:07 PM	#8
kkhurr Private First Class 24 Rep 129 Posts Drives: A/W E92 M3 '08 Join Date: Feb 2009 Location: Miami/Fort Lauderdale iTrader: (0)	same issue on my car. Is it an easy replacement. DIY? or a bit more complicated than that? __________________
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11-16-2015, 04:48 AM	#11
vsix Lieutenant Colonel 602 Rep 1,611 Posts Drives: M3 E92 sold, M4 F82 Join Date: Nov 2012 Location: ATL iTrader: (0)	You're welcome
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11-16-2015, 06:12 AM	#12
anom3 Captain 260 Rep 955 Posts Drives: F30 335ix Join Date: Apr 2014 Location: Behind the wheel iTrader: (0)	Yeah its the throw out bearing. BTW, replacing it wont help. I had my clutch changed about 20k km ago... Did it right from the moment I drove out of the shop.
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11-16-2015, 09:23 AM	#14
thekurgan Bad Lieutenant 233 Rep 3,517 Posts Drives: E90M3 Join Date: Aug 2007 Location: Sacramento iTrader: (0) Garage List 2008 BMW M3 [0.00]	It's NOT the throw out bearing. To test that, the noise would appear when the clutch is out (pedal down). What you're (used correctly) hearing is normal. __________________ 02 E39M5 \| TiAg/Schwartz \| Tubi Rumore \| Ultimate Ti Pedals \| E60 SSK \| Jim Blanton 3.45 40/100% \| Coby Alcantara \| StrongStrut STB
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11-16-2015, 11:01 AM	#17
vsix Lieutenant Colonel 602 Rep 1,611 Posts Drives: M3 E92 sold, M4 F82 Join Date: Nov 2012 Location: ATL iTrader: (0)	Just do a short vid and we go from there...
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