Author Topic: Transmission noise and vibration  (Read 1875 times)

glucklich21

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Transmission noise and vibration
« on: November 06, 2011, 05:35:29 AM »
Within the past few days I've been getting a bad vibration from my transmission that can be felt in the clutch pedal and the shifter. It seems worse from 1.5k-3k and then perfectly smooth for the most part before and after that range. During the vibration there's a definite humming sound coming from the transmission that's follows the engine's revs, the same goes for the vibration. It isn't speed or gear dependent, only rev. The sound doesn't go away when the clutch is depressed, nor the vibration.

Background on the car:

80k+ M42 (#2 M42 for this car, just refreshed 3 months ago)
500k G240 (Resealed and fresh MTL)
Remanufactured late model 325i starter
New 323i flywheel
New factory hardware for the clutch and pressure plate
New Sachs 325i clutch and pressure plate
New Sachs 325i throw out bearing
New OEM 15mm pilot bearing
New OEM center support bearing and pre-tensioned 10mm exactly
Driveshaft balanced 1 year ago



Here's a sound clip of noise. It was recorded from inside the console at 2.7k rpms.


>Click here<

Any ideas what it could be?

stillmatick

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Transmission noise and vibration
« Reply #1 on: November 07, 2011, 10:03:37 AM »
light fly wheel i assume??