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-   -   clunk sound while shifting (http://forum.e46fanatics.com/showthread.php?t=775244)

vodoojak 06-30-2010 09:44 PM

clunk sound while shifting
 
When i am just putting around town my rear end makes a clunk sound when shifting, but while under hard acceleration it feels solid and i dont hear any noise. Is this normal?

2filthy3 06-30-2010 09:57 PM

Shift mode, total miles?

Could be rear sub-frame mounting bushes.

DeanMachine 06-30-2010 10:02 PM

I would check the rear differential mounts.

jsinclair_325ci 06-30-2010 10:04 PM

mine does that too unfortunately...but i adjusted my shifting to avoid the clunk. but id like to know who or what fixes this

SNORCE 06-30-2010 10:20 PM

subframe bushing. mine was the same. changed all seven bushing and now its fine. here is a diy. what the first video and ull know why it makes that thump noice

http://forum.e46fanatics.com/showthr...t=subframe+diy

ECSTuning 07-01-2010 09:18 AM

The ///M limited slip differential is know for a grinding noise during low speed cornering. When the rear wheel speed differential varies during tight cornering, a slip stick effect is created on the lining and steel discs incorporated in the differential locking clutch, causing the grinding noise.

This is the new fluid described by BMW to cure this problem (TSB# 33 01 02)

Often overlooked, scheduled rear differential service is very important. Over time gear lube breaks down causing bearings and internal components fail. Regular maintenance will keep your vehicle running properly for years to come.

ECS rear differential service kit includes:

* Three bottle of Genuine BMW Limited Slip Gear Lube
* Two New Genuine BMW Drain/Fill plugs
* Drain plug O-ring


Click HERE to order or for more information.
http://c1552172.cdn.cloudfiles.racks...85477_x300.jpg

However depending on your millage it could also be your Guibo...

Click HERE to order or for more information.
http://c1552172.cdn.cloudfiles.racks...17315_x300.jpg


Please let us know if you have any questions! Feel free to shoot me a PM or email.

Best,
Joe


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