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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 06-30-2010, 08:44 PM   #1
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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?
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Old 06-30-2010, 08:57 PM   #2
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Shift mode, total miles?

Could be rear sub-frame mounting bushes.
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Old 06-30-2010, 09:02 PM   #3
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I would check the rear differential mounts.
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Old 06-30-2010, 09:04 PM   #4
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mine does that too unfortunately...but i adjusted my shifting to avoid the clunk. but id like to know who or what fixes this
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Old 06-30-2010, 09:20 PM   #5
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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
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Old 07-01-2010, 08:18 AM   #6
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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.

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

Click HERE to order or for more information.

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clunk, clutch, rear end, sound, tranny

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