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Old 11-11-2012, 02:46 PM   #1
Registered User
Join Date: Jul 2011
Location: Pittsburgh
Posts: 2,272
My Ride: '01 325i
Help Me Diagnose Driveline Noise

Hey Fanatics,
I have been trying to diagnose a oscillating noise from my driveline. I have a 2001 325i Auto and the sound increases proportionally with increasing RPM's. (More RPM's, the faster the repetition of the noise) It happens in P,R,N,D so I doubt it has to do with the wheels or suspension components. For example, when I start the car up, in P, I can hear a ticking noise coming from under the passenger seat side of the car. It is not coming from the front of the engine for certain. In my opinion it could be anything from the rear of the engine all the way to the rear of the car. Transmission is fine. No slips, no gear failures that I know of, and I just got my transmission fluid changed the correct way, with the correct fluids from ZF and etc etc back in July.

What could this be? Hopefully the guibo.
2001 325i ZCW, ZPP
Titansilber Metallic, Black Interior
The 160,000 mile, clean daily driver
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