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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 09-18-2012, 06:37 AM   #1
zabalzae
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Rear clunk gone

01 330ci
Just wanted to shared.
Every time I changed gears it would make a loud clunk from the back. changed my differential fluid last night with Mobil 1 75w-90 and the annoying clunk is finally gone.. the old fluid was at the right level it was just dark..

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Old 09-18-2012, 07:29 AM   #2
phubar
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I also replaced the fluid but I used royal purple and the clunk is still there (confirmd differental clunk, not subframe or bushings) I might try Mobil1 next, thanks for the tip.
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Old 09-18-2012, 07:39 AM   #3
zabalzae
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At first I thought it was the motor mounts (not the transmission mounts) bc they are completely gone but I decided to change the fluid first and now the clunk is gone. But I'm still going to replace the motor mounts. You might want to check that, I heard from someone here that the motor mounts can cause that 2.

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Old 09-18-2012, 10:32 AM   #4
Steven747
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fyi op your diff bushing is prob shot pretty bad
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Old 09-18-2012, 12:41 PM   #5
zabalzae
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Already replaced them
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Old 09-18-2012, 01:17 PM   #6
Steven747
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weird how fluid will get rid of a clunk i dont buy it
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Old 09-18-2012, 01:27 PM   #7
zabalzae
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I know I was reading on bimmerforum that there was something with the fluid that cause the clunk
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Old 09-18-2012, 01:28 PM   #8
zabalzae
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http://forums.bimmerforums.com/forum...d.php?t=954111

Idk if it's for non m
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Old 09-18-2012, 01:54 PM   #9
JasonSmithed
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Guibo / cmb
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Old 09-18-2012, 01:56 PM   #10
JasonSmithed
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http://forum.e46fanatics.com/showthread.php?t=944258

Diy flex disc/center mount bearing install w/ home tools. (knocking clanking sound)
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Old 09-18-2012, 02:00 PM   #11
zabalzae
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Replaced 2
That's why I was going to replace the motor mounts
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Old 09-18-2012, 02:34 PM   #12
JasonSmithed
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Rear clunk
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Old 09-18-2012, 08:17 PM   #13
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Quote:
Originally Posted by Steven747 View Post
weird how fluid will get rid of a clunk i dont buy it
You should as Gear Oil Help with Shock and Heat during operation...
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Old 09-18-2012, 10:40 PM   #14
Steven747
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Quote:
Originally Posted by TrippinBimmer View Post
You should as Gear Oil Help with Shock and Heat during operation...
I see thanks
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