BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications
 
GTB Performance
Post Reply
 
Thread Tools Search this Thread
      08-04-2013, 03:38 PM   #1
Thik
Private First Class
6
Rep
144
Posts

 
Drives: 2010 Space Grey E92 M3 6spd
Join Date: Jan 2013
Location: Toronto

iTrader: (0)

Loud clunking noise in 6-spd transmission (updated with pics)

So everytime there's a load change, the drivetrain makes a loud 'thump' sound. This includes everytime I change gears, accelerating and decelerating. When letting off the gas at higher rpm's, the transmission gives a loud whining noise all the way down to idle. The car drives fine and the clutch is not slipping even at WOT in high gears.

The car is stock 2010 with 40,000 miles. The noise has only became much louder the last few days. I'm taking it to the dealership in the coming week. Hopefully whatever it is, will be covered under warranty.

Any ideas guys?

Last edited by Thik; 08-05-2013 at 12:25 PM.
Appreciate 0
      08-04-2013, 04:36 PM   #2
edwinm3
Colonel
edwinm3's Avatar
United_States
38
Rep
2,082
Posts

 
Drives: E92 MELBOURNE RED M3
Join Date: Nov 2011
Location: Doral

iTrader: (9)

Sounds like it could be the diff
__________________
Appreciate 0
      08-04-2013, 05:53 PM   #3
JEllis
Brigadier General
JEllis's Avatar
84
Rep
4,782
Posts

 
Drives: E36 M3, E92 M3
Join Date: Oct 2006
Location: SD CA/Yuma

iTrader: (4)

I am also thinking the thunk might be the diff but worth having the drivetrain checked out.

Jason
__________________
http://www.m3post.com/forums/signaturepics/sigpic14547_7.gif
Appreciate 0
      08-04-2013, 05:57 PM   #4
///M Power-Belgium
Brigadier General
///M Power-Belgium's Avatar
Belgium
66
Rep
3,915
Posts

 
Drives: ///M3-DCT- E92 Silverstone II
Join Date: Jul 2012
Location: Belgium

iTrader: (0)

Sounds nok...go asap to your BMW dealer !
__________________
BPM DEV-Tune & DCT software update & Servotronic & coding///Alpine HID Angeleyes///Oem.exhaust mod.
Appreciate 0
      08-04-2013, 08:34 PM   #5
Mike Benvo
BimmerPost Supporting Vendor
Mike Benvo's Avatar
United_States
96
Rep
4,799
Posts


 
Drives: Harrop SC M3 / E46 M3 / 7Turbo
Join Date: Apr 2008
Location: SoCal

iTrader: (7)

Garage List
2008 BMW M3  [5.00]
1990 BMW 735i Turbo  [5.00]
2004 BMW M3  [0.00]
Send a message via Skype™ to Mike Benvo
Could be diff, something wrong with the pressure plate or clutch, or an issue with the transmission or engine mounts.

Might be something else but those are the first three that come to mind.
__________________

-----| Like us on Facebook | Instagram || Tuning Information | Remote Coding |-----
----Visit us at www.BPMSport.com - Emotion. Driven. | Toll Free: (888) 557-5133----
Appreciate 0
      08-04-2013, 08:49 PM   #6
W///
Major General
W///'s Avatar
84
Rep
5,395
Posts

 
Drives: 2008 E92 M3/1999 E36 M3 Coupe
Join Date: Sep 2011
Location: SC

iTrader: (12)

Diff bolt maybe?
__________________
2008 E92 M3: Sparkling Graphite | Bamboo Beige | 6MT | CF Roof | HRE | Catless Eisenmann Race | BPM Sport | Swift | Arkym | Mode Carbon | M.Perf
Appreciate 0
      08-05-2013, 12:16 PM   #7
Thik
Private First Class
6
Rep
144
Posts

 
Drives: 2010 Space Grey E92 M3 6spd
Join Date: Jan 2013
Location: Toronto

iTrader: (0)

So after reading your posts, I did a search for Dif bolt breaking. It looks more and more like that's what happened. The differential bolt broke. It got worse after I gunned it and maybe loosened it up more.

Anyways, here are some pics that may give additional clues:



Notice how the differential is not horizontal to the chasis. There's also a spot on the right that looked like rubbed against other metal.

I'm going to take the car to the dealership this week since they are not open today. Will keep posted.
Appreciate 0
      08-05-2013, 12:22 PM   #8
s65e90
Banned
6
Rep
513
Posts

 
Drives: 2009 e90
Join Date: May 2013
Location: SoFlo

iTrader: (0)

Quote:
Originally Posted by Thik View Post
So after reading your posts, I did a search for Dif bolt breaking. It looks more and more like that's what happened. The differential bolt broke. It got worse after I gunned it and maybe loosened it up more.

Anyways, here are some pics that may give additional clues:



Notice how the differential is not horizontal to the chasis. There's also a spot on the right that looked like rubbed against other metal.

I'm going to take the car to the dealership this week since they are not open today. Will keep posted.

hard to tell due to the car being parked next to the curb like that, but I would be pretty confident (99%) that the diff bolt broke. Clunking is from the diff shifting and the whining is cause it's all out of alignment. Sucks to see but should be able to get fixed ASAP!

(if not under warranty it's also a fairly easy job to do)
Appreciate 0
      08-06-2013, 04:25 PM   #9
SHADY1
Hamann M3 Fan
SHADY1's Avatar
United_States
52
Rep
2,736
Posts

 
Drives: 2008 E92 Jerez Black M3
Join Date: Feb 2008
Location: Killeen, Texas

iTrader: (6)

Garage List
Talking

Quote:
Originally Posted by Thik View Post
So after reading your posts, I did a search for Dif bolt breaking. It looks more and more like that's what happened. The differential bolt broke. It got worse after I gunned it and maybe loosened it up more.

Anyways, here are some pics that may give additional clues:



Notice how the differential is not horizontal to the chasis. There's also a spot on the right that looked like rubbed against other metal.

I'm going to take the car to the dealership this week since they are not open today. Will keep posted.
Your diff bolt is broken and that means your bushing are most likely worn and you need to change them. I broke my diff bolt 5 times on the 3rd time is when I notice the bad bushing was causing it to break. After the 5th time I got really pissed and I installed Turner Motor Sport Solid Aluminum Race bushing no more diff bolt breaking ever again

take a look

http://www.m3post.com/forums/showthr...=843389&page=4

Your Stealership should cover this under warranty, since its your first time.
__________________

JZB,6MT, My mods 360 Forged 20inch wheels,VF650 Supercharger,SPEC Super Twin Disk Clutch,Hamann CF roof spoiler,H&R springs,CF grills,Hamann rear trunk spoiler,Hamann Side Skirts, ARKYM full CF bumper, Gintani Race exhaust, AA X-pipe catless,RPI scoops,AA SSK, Arkym CF Double Sided Vented Hood,Arkym CF rear Diffuser
Appreciate 0
      08-06-2013, 08:16 PM   #10
Longwong
Banned
9
Rep
371
Posts

 
Drives: e92 m3 catless
Join Date: Jun 2013
Location: USA

iTrader: (0)

5 times seems excessive. Was there any other cause of this continuing to break?
Appreciate 0
      08-07-2013, 01:46 PM   #11
Thik
Private First Class
6
Rep
144
Posts

 
Drives: 2010 Space Grey E92 M3 6spd
Join Date: Jan 2013
Location: Toronto

iTrader: (0)

Quote:
Originally Posted by SHADY1 View Post
Your diff bolt is broken and that means your bushing are most likely worn and you need to change them. I broke my diff bolt 5 times on the 3rd time is when I notice the bad bushing was causing it to break. After the 5th time I got really pissed and I installed Turner Motor Sport Solid Aluminum Race bushing no more diff bolt breaking ever again

take a look

http://www.m3post.com/forums/showthr...=843389&page=4

Your Stealership should cover this under warranty, since its your first time.
Thanks for the input. N00b question: what's a bushing and is there a part number for it? I'll insist that the dealership replace that as well. Thanks.

The dealership is booked up until Friday, so more waiting for me.
Appreciate 0
      08-07-2013, 10:50 PM   #12
MilehighM3
Colonel
MilehighM3's Avatar
21
Rep
2,184
Posts

 
Drives: E90 M3
Join Date: May 2011
Location: Colorado Springs

iTrader: (9)

Quote:
Originally Posted by Lute
Wow Thik, that diff is more sideways than Derple and Longwong on the track at the same time
Appreciate 0
      08-07-2013, 11:50 PM   #13
pkimM3r
Banned
pkimM3r's Avatar
95
Rep
7,321
Posts

 
Drives: m3 saloon in granny mode.
Join Date: Dec 2009
Location: lost angeles

iTrader: (0)

Quote:
Originally Posted by Lute
Wow Thik, that diff is more sideways than Derple and Longwong on the track at the same time
Derple gets sideways on the way to the track.
Appreciate 0
      08-08-2013, 01:55 PM   #14
SHADY1
Hamann M3 Fan
SHADY1's Avatar
United_States
52
Rep
2,736
Posts

 
Drives: 2008 E92 Jerez Black M3
Join Date: Feb 2008
Location: Killeen, Texas

iTrader: (6)

Garage List
Talking

Quote:
Originally Posted by Thik View Post
Thanks for the input. N00b question: what's a bushing and is there a part number for it? I'll insist that the dealership replace that as well. Thanks.

The dealership is booked up until Friday, so more waiting for me.
If you look in the thread I sent you I posted pics of my old worn out rubber bushing that caused the diff bolt to break. You will also see a pic of the silver aluminum solid race bushing I had installed on my car.

http://www.m3post.com/forums/showthr...=843389&page=4

__________________

JZB,6MT, My mods 360 Forged 20inch wheels,VF650 Supercharger,SPEC Super Twin Disk Clutch,Hamann CF roof spoiler,H&R springs,CF grills,Hamann rear trunk spoiler,Hamann Side Skirts, ARKYM full CF bumper, Gintani Race exhaust, AA X-pipe catless,RPI scoops,AA SSK, Arkym CF Double Sided Vented Hood,Arkym CF rear Diffuser
Appreciate 0
      08-08-2013, 11:17 PM   #15
e92livin
Captain
e92livin's Avatar
Canada
10
Rep
932
Posts

 
Drives: M3
Join Date: Apr 2012
Location: Toronto/Orlando

iTrader: (5)

diffff!
__________________
2008 E92 BMW M3 MR/BB 6MT
|Gintani Supercharged|Gintani X-Pipe|Stack Gauges|Volk TE37SL|BC Racing Coilovers|Hankook RS-3 |BMW Performance Spoiler|BMW Performance Steering Wheel|BMW Performance Side Gills + Grilles|Mode Carbon Variant 2 Splitter|IND Tri- Stitched Shift + Brake Boot|
Appreciate 0
      08-14-2013, 05:47 PM   #16
Thik
Private First Class
6
Rep
144
Posts

 
Drives: 2010 Space Grey E92 M3 6spd
Join Date: Jan 2013
Location: Toronto

iTrader: (0)

Update:
The clunking was due to the differential bolt being sheared off the bracket, causing the bracket to bang against the dif everytime there's a load change.

Dealer replaced the bolt under warranty with no fuss. They inspected the bushing and said it was in good condition.
Appreciate 0
      08-18-2013, 03:45 PM   #17
Bluesummer
Lieutenant General
Bluesummer's Avatar
Taiwan
179
Rep
15,410
Posts

 
Drives: slower than Ayrton Senna
Join Date: Dec 2006
Location: Nürburgring, be there once, your heart, your soul will stay there.

iTrader: (13)

Garage List
2015 M4  [0.00]
2011 E82 135  [0.00]
2011 M3  [0.00]
2007 335  [0.00]
I notice it's primarily 6MT guys in this thread that has the diff bolt problems, has anyone with DCT encounter the same problem?
__________________

R.I.P. Steve Noh
Appreciate 0
      08-19-2013, 03:22 PM   #18
SHADY1
Hamann M3 Fan
SHADY1's Avatar
United_States
52
Rep
2,736
Posts

 
Drives: 2008 E92 Jerez Black M3
Join Date: Feb 2008
Location: Killeen, Texas

iTrader: (6)

Garage List
Wink

Quote:
Originally Posted by Longwong View Post
5 times seems excessive. Was there any other cause of this continuing to break?
The bushing was the problem the first 3 times no one look at the bushing.
__________________

JZB,6MT, My mods 360 Forged 20inch wheels,VF650 Supercharger,SPEC Super Twin Disk Clutch,Hamann CF roof spoiler,H&R springs,CF grills,Hamann rear trunk spoiler,Hamann Side Skirts, ARKYM full CF bumper, Gintani Race exhaust, AA X-pipe catless,RPI scoops,AA SSK, Arkym CF Double Sided Vented Hood,Arkym CF rear Diffuser
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 08:53 AM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST