BMW M3 Forum
BMW M3 Forum BMW M3 Gallery BMW M3 Reviews BMW M3 Social Groups BMW M3 Chat M3Forum Sponsors >>
Loading


Mobile M3forum
Go Back   BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X) > BMW M3 Discussions > E46 M3 (2001-2006)
Tire Rack Buy Winter Tires Now!
Not a member? Register Now!
Register Gallery All Albums Garage Search Today's Posts Mark Forums Read Calendar FAQ

E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


Reply
 
Thread Tools Display Modes
Old Sat, May-05-2012, 10:28:58 PM   #1
username11
Registered User
 
Join Date: Oct 2008
Posts: 2,042
In the garage:
Reputation: 0 username11 is on a distinguished road

United States




Default Machine gun style clunking from center/passenger area under acceleration

As the title says, I have very intermittent machine gun style clunking/knocking under acceleration from the center/passenger area of the car. It happens abruptly but usually a) when accelerating moderately from a stop while also turning, e.g. right turn at a light shifting out of 1st at 4K 2) when launched hard on a straight. I can accelerate in a straight line gently and it does not occur. Car does not make any noise on abrupt throttle lift off and weight shift so I am not getting into subframe worry. Car is a 2002 M3 SMG.

Searching has told me that this is most likely the center support bearing. Good idea to replace guibo at the same time.

Can anyone give me a general idea of how much R&R of CSB should cost? I am also curious as to why it is intermittent. Happened for the first time after a two hour drive today and seems to only occur when the car has been driven fast for a while.

Last edited by username11; Sat, May-05-2012 at 10:37:49 PM.
Jump to top username11 is offline   Reply With Quote
Sponsored Links
Register now and remove these ads
Old Sat, May-05-2012, 10:47:24 PM   #2
Taunto
Registered User
 
Taunto's Avatar
 
Join Date: Feb 2011
Posts: 114
Reputation: 0 Taunto is on a distinguished road
Location: Calgary

Canada




Default Re: Machine gun style clunking from center/passenger area under acceleration

yes I would inspect the center support bearing and Guibo as well. But you are hearing it while your turning, I would be inspecting them CV axles at the back end of the car. I know you said the sound seems to be coming center/ passenger area but you would be amazed how sound can travel when diagnosing a clunk or rattle. Anyway check to see if the CV boots are torn. Maybe raise the rear tires off the ground and spin the tire by hand and see of you can hear any clicking. if you want to go further, remove the cv axle and move it around by hand. You might find some binding or grinding going on.
__________________
* Technology is the Replacement for Displacement *
Jump to top Taunto is offline   Reply With Quote
Old Sun, May-20-2012, 04:01:04 AM   #3
R10_Telemetry
Registered User
 
Join Date: Apr 2008
Posts: 555
Reputation: 0 R10_Telemetry is on a distinguished road

Monaco




Default Re: Machine gun style clunking from center/passenger area under acceleration

Please share the resolution to your problem, thanks!
Jump to top R10_Telemetry is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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. The time now is 10:13:28 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
M3Forum.com and M3forum.net is in no way sponsored, endorsed or affiliated by or with BMW NA / BMW AG or any of it's subsidiaries or vendors.
BMW and M3 (E90 M3 | E92 M3 | E93 M3 | E46 M3 | E36 M3 | E30 M3) are registered trademarks of BMW AG.
M3Forum Terms of Service
Copyright 1999-2017 M3Forum.com
Discussing Machine gun style clunking from center/passenger area under acceleration in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)