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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 09-28-2009, 11:46 AM   #1
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Drivetrain kicks when I shift

I have a 2001 e46 330i with 125 thousand miles. When I shift gears, the back end of the car thumps. It's definitely not the transmission. I can control how hard the car kicks by how quickly I engage the clutch. Its far more noticeable in the lower gears then it is in 4th and 5th. What bushings should I be inspecting?
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Old 09-28-2009, 11:47 AM   #2
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Diff bushings and subframe mounts
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Old 09-28-2009, 11:58 AM   #3
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Do you know of a diagram showing where the rear subframe mounts and bushings are? thanks
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Old 09-28-2009, 08:52 PM   #4
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Old 09-29-2009, 08:41 PM   #5
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I'd say it's most likely the rear differential bushing. When it goes bad, the diff can move upwards and bump in to the rear floor, causing that clunking sound.
-David www.e46nonm.com | My Videos
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Old 10-20-2009, 10:27 PM   #6
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I just bought a car and I kinda think I hear the same noise... its not horrible bad sounding and when I control the clutch good its less noticeable.. My 323ci has 128k on it, is this something that goes bad commonly, and is it hard to fix?
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