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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Urgent Response Needed! - Transmission Q?



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      04-11-2012, 02:47 PM   #1
beneliezer
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Drives: 2006 BMW 325i
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Urgent Response Needed! - Transmission Q?

Hi I realize this isn't the appropriate section but it gets more views and I'm in a pinch. I dropped my car off at a drivetrain specialist to diagnose some clunking issues I've been having which feel like they come from the back of the car. I suspected the diff may be bad.

The car makes this loud thumping/clunking sound at variable speeds, and is also evident while coasting with the car in 'N' (its an Auto) 325i '06.

The mechanic called me today, and I suspect none of the information I gave the receptionist about the diff was relayed to him, because when he called me he stated that he dropped the tranny pan and discovered the fluid was black and saw 'contaminants'. I understand its not very unusual to find metal shavings at the bottom of the pan, as this is expected through normal wear and tear. Sure, the fluid should probably be changed, but his indication that my problem is a tranny issue conflicts with me, because the problem is also evident when the car is in neutral.

Can anyone tell me if my assumptions are correct? Could this in fact be the tranny? He wants to drop the entire tranny and take it apart to inspect. Seems unnecessary to me, as my unprofessional opinion is that its related to the driveshaft, u-joints, bearings, diff, in some way shape or form.

Please advise! Thank you for the prompt responses.
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