2008 e93 6MT clunk- driving me insane!

ThreeRs · 08-05-2015, 01:49 AM

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Don't mind the revving. Only video I can find that has the clunk loud enough to hear. It happens when the car is at a dead stop and Begins moving foward. Neutral to 1st gear .. And sometimes with I'm a dead stop then shift into reverse as I let off the clutch it clunks. Car has 43,000 miles. What could it be?!

anom3 · 08-05-2015, 03:00 AM

yep wierd, my 6mt does not do that.

guessing your talking about the almost glass like single clunk rite?

Quote:

Originally Posted by ThreeRs

View My Video

Don't mind the revving. Only video I can find that has the clunk loud enough to hear. It happens when the car is at a dead stop and Begins moving foward. Neutral to 1st gear .. And sometimes with I'm a dead stop then shift into reverse as I let off the clutch it clunks. Car has 43,000 miles. What could it be?!

ThreeRs · 08-05-2015, 08:56 AM

Yup, it's almost like a solid like thump as soon as I begin to pull forward.

burtonsbs5114 · 08-05-2015, 09:13 AM

I dont believe mine does that either. Sometimes mine takes a little bit of 'effort' getting it into first when cold though.

ThreeRs · 08-05-2015, 10:46 AM

It makes the noise at all times. Doesn't change whether the cars cold or warmed up.

Canuckles · 08-05-2015, 11:11 AM

Mine and many others does that. Just part of the character, don't believe it damages the transmission but it can be disconcerting.

OC ///M · 08-05-2015, 11:37 AM

Quote:

Originally Posted by Canuckles

Mine and many others does that. Just part of the character, don't believe it damages the transmission but it can be disconcerting.

While our car does exhibit many different mechanical noises associated with the drivetrain, I wouldn't say that particular "clunk" is "part of its character". It doesn't sound normal to me...none of the four 6MT e92's that I've owned have done this. I probably would take it in for a check-up...

Good luck and keep us posted with your findings OP!

bstone801 · 08-05-2015, 12:21 PM

Center support drive shaft bearing would be my guess. My e39 M5 did that. Under load it pings and clunks. Not saying it is exactly that but that would be my guess.

ThreeRs · 08-05-2015, 01:31 PM

Quote:

Originally Posted by bstone801

Center support drive shaft bearing would be my guess. My e39 M5 did that. Under load it pings and clunks. Not saying it is exactly that but that would be my guess.

I'm going to check that out, it definitely only happens during a load change.

Canuckles · 08-05-2015, 08:23 PM

Quote:

Originally Posted by OC ///M

While our car does exhibit many different mechanical noises associated with the drivetrain, I wouldn't say that particular "clunk" is "part of its character". It doesn't sound normal to me...none of the four 6MT e92's that I've owned have done this. I probably would take it in for a check-up...

Good luck and keep us posted with your findings OP!

I agree good luck OP.

FYI, I've driven three manuals a 2008, 2009 and mine a 2011.75. All have exhibited this characteristic. Hence why I said many others, not all. But in finding common ground I agree I wish it didn't do that.

ThreeRs · 08-05-2015, 08:36 PM

Quote:

Originally Posted by Canuckles

I agree good luck OP.

FYI, I've driven three manuals a 2008, 2009 and mine a 2011.75. All have exhibited this characteristic. Hence why I said many others, not all. But in finding common ground I agree I wish it didn't do that.

Thanks for the suggestions guys. I'm in Atlanta and will be back Tuesday. Definitely keep you guys posted.

Doc Oc · 08-05-2015, 08:49 PM

Quote:

Originally Posted by ThreeRs

View My Video

Don't mind the revving. Only video I can find that has the clunk loud enough to hear. It happens when the car is at a dead stop and Begins moving foward. Neutral to 1st gear .. And sometimes with I'm a dead stop then shift into reverse as I let off the clutch it clunks. Car has 43,000 miles. What could it be?!

This may or may not be related but a few years ago I had a new clutch and flywheel installed in a corvette. When I got the car back it made the same noise as yours under the same circumstances. Turns out they had misaligned things when they put it back together and crushed the throw out bearing with the input shaft. Probably not related but the sound is very similar.

OzCraig · 08-06-2015, 02:53 AM

This sounds super familiar to me. On the rally cars I've run that was pretty much always somewhere along the drive shaft, mostly the u-joint or the centre bearing being worn.
Not a huge job to fix really.

naoitonesta · 08-06-2015, 03:17 AM

It makes the noise at all times.

MrPrena · 08-06-2015, 02:01 PM

Yup. I've heard that noise today with top down.

Flying Ace · 08-06-2015, 02:11 PM

mine doesn't do it. IMO, this is not a normal sound.

burtonsbs5114 · 08-06-2015, 02:21 PM

Does the clunk happen when you put it into first or when you start to move forward after putting it into first from a stop?

badbeef · 08-06-2015, 02:39 PM

I hope this isn't the case for you, but I was getting the same thing. It started and then got very bad within a day. It turned out to be a sheared off bolt which connected the diff to the subframe as I remember.

4corners · 08-06-2015, 02:49 PM

Sounds like a drive-shaft related noise. A u-joint perhaps.

ThreeRs · 08-06-2015, 03:08 PM

Quote:

Originally Posted by burtonsbs5114

Does the clunk happen when you put it into first or when you start to move forward after putting it into first from a stop?

When I start to move forward after 1 gear is engaged.

ThreeRs · 08-06-2015, 11:33 PM

Quote:

Originally Posted by DrFerry

My two cents: Possibly worn U joints, worn out diff bushings, excessive gear lash between diff ring and pinion, or a broken diff carrier bolt(s). Also, a very slight chance that a rear sub-frame bushing has gone south. Have someone sit in the rear seat and listen to locate where the sound is coming from. Also, get the car up a lift and shift the thing back and forth from reverse to 1st while someone is under it to locate the offending part(s).

Definitely gonna give all that a shot. From just having someone stand outside the car it seems like it's coming from somewhere in the front half of the car if that makes any sense. But who knows..! Guess we'll just have to wait and see.

pacent · 08-07-2015, 12:36 AM

Mine does that. Brought it over to a-spec and they said it is normal. Their mechanic says about 1/3 of the e92 M3's have that sound whenever the drivetrain loads and unloads. He's seen it both on brand new cars off the lot and used cars. I wouldn't worry too much about it.

08-05-2015, 01:49 AM	#1
ThreeRs Enlisted Member 5 Rep 38 Posts Drives: 08 E93 M3 Join Date: Mar 2015 Location: Miami,Fl iTrader: (0)	2008 e93 6MT clunk- driving me insane! View My Video Don't mind the revving. Only video I can find that has the clunk loud enough to hear. It happens when the car is at a dead stop and Begins moving foward. Neutral to 1st gear .. And sometimes with I'm a dead stop then shift into reverse as I let off the clutch it clunks. Car has 43,000 miles. What could it be?!
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08-05-2015, 08:56 AM	#3
ThreeRs Enlisted Member 5 Rep 38 Posts Drives: 08 E93 M3 Join Date: Mar 2015 Location: Miami,Fl iTrader: (0)	Yup, it's almost like a solid like thump as soon as I begin to pull forward.
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08-05-2015, 09:13 AM	#4
burtonsbs5114 Major 368 Rep 1,198 Posts Drives: 2021 F87 M2c. LBB, 6mt Join Date: Nov 2014 Location: Fort Lauderdale, FL iTrader: (0) Garage List 2006 MV Agusta Burt ... [0.00] 2012 Trek Madone 6. ... [0.00] 2008 BMW e93 M3 [0.00]	I dont believe mine does that either. Sometimes mine takes a little bit of 'effort' getting it into first when cold though. __________________ 2021 F87 M2c. Long Beach Blue over black with blue stitching. 6mt, executive package, slick top.
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08-05-2015, 10:46 AM	#5
ThreeRs Enlisted Member 5 Rep 38 Posts Drives: 08 E93 M3 Join Date: Mar 2015 Location: Miami,Fl iTrader: (0)	It makes the noise at all times. Doesn't change whether the cars cold or warmed up.
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08-05-2015, 11:11 AM	#6
Canuckles First Lieutenant 115 Rep 331 Posts Drives: MW 2016 F82 M4 Join Date: Feb 2011 Location: British Columbia iTrader: (0)	Mine and many others does that. Just part of the character, don't believe it damages the transmission but it can be disconcerting.
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08-05-2015, 12:21 PM	#8
bstone801 Private First Class 94 Rep 198 Posts Drives: Alpine e90 M3 slick stick Join Date: May 2015 Location: Boise, ID iTrader: (0)	Center support drive shaft bearing would be my guess. My e39 M5 did that. Under load it pings and clunks. Not saying it is exactly that but that would be my guess.
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08-06-2015, 02:53 AM	#13
OzCraig Private First Class 64 Rep 170 Posts Drives: 09 E90, DCT, Space Grey Join Date: Aug 2013 Location: Sydney AU iTrader: (0)	This sounds super familiar to me. On the rally cars I've run that was pretty much always somewhere along the drive shaft, mostly the u-joint or the centre bearing being worn. Not a huge job to fix really.
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08-06-2015, 03:17 AM	#14
naoitonesta Registered 2 Rep 3 Posts Drives: bmw Join Date: Aug 2015 Location: m3 iTrader: (0)	It makes the noise at all times. __________________ bmw is love
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08-06-2015, 02:01 PM	#15
MrPrena Captain 1588 Rep 803 Posts Drives: BMW Hyundai Nissan Join Date: Jan 2014 Location: TB iTrader: (0)	Yup. I've heard that noise today with top down.
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08-06-2015, 02:11 PM	#16
Flying Ace Lieutenant General 4985 Rep 11,891 Posts Drives: G05 45e, 997.1 & 991.1 GT3s Join Date: Jul 2014 Location: SF, CA iTrader: (5)	mine doesn't do it. IMO, this is not a normal sound. __________________ 22 Phytonic/Coffee X5 45e (CoVID-free) 08 Speed Yellow 911 GT3 Sharkwerks 12 AW/Cinnamon X5d Sports Pkg (retired) 14 AW/Beige M6GC ZCP, MPE, V2 steering wheel, vorsteiner (retired) 08 SSII/Black E90 M3 (retired)
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08-06-2015, 02:21 PM	#17
burtonsbs5114 Major 368 Rep 1,198 Posts Drives: 2021 F87 M2c. LBB, 6mt Join Date: Nov 2014 Location: Fort Lauderdale, FL iTrader: (0) Garage List 2006 MV Agusta Burt ... [0.00] 2012 Trek Madone 6. ... [0.00] 2008 BMW e93 M3 [0.00]	Does the clunk happen when you put it into first or when you start to move forward after putting it into first from a stop? __________________ 2021 F87 M2c. Long Beach Blue over black with blue stitching. 6mt, executive package, slick top.
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08-06-2015, 02:39 PM	#18
badbeef Second Lieutenant 49 Rep 244 Posts Drives: 3 pedals Join Date: Mar 2014 Location: USA iTrader: (0)	I hope this isn't the case for you, but I was getting the same thing. It started and then got very bad within a day. It turned out to be a sheared off bolt which connected the diff to the subframe as I remember.
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08-06-2015, 02:49 PM	#19
4corners Major 391 Rep 1,133 Posts Drives: 2008 Jet Black M3 Coupe Join Date: Feb 2011 Location: Yucca Valley, CA - Kelowna, BC iTrader: (0) Garage List 2003 Blue Bird TC2000 [0.00] 2005 BMW 325Ci [0.00] 2008 BMW M3 [0.00]	Sounds like a drive-shaft related noise. A u-joint perhaps.
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08-07-2015, 12:36 AM	#22
pacent Private 13 Rep 53 Posts Drives: '06 Evo MR, '09 M3, '12 X5 Join Date: Jan 2014 Location: Chicago iTrader: (0)	Mine does that. Brought it over to a-spec and they said it is normal. Their mechanic says about 1/3 of the e92 M3's have that sound whenever the drivetrain loads and unloads. He's seen it both on brand new cars off the lot and used cars. I wouldn't worry too much about it.
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