323ci 5-speed transmission problem - BMW Forum - BimmerWerkz.com

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post #1 of 2 (permalink) Old 05-07-2009, 11:17 PM Thread Starter
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323ci 5-speed transmission problem

When I start up the car and let go of the clutch it starts to make a light buzzing sound. I changed the transmission (5-speed manual) oil using Royal Purple 75W90 and it took about 1.5 liters. When I'm driving the car on first, second, third, and fourth gear when I press down the gas it starts to make a loud buzzing sound but it doesn't do it on fifth. When I am not on pressing down the gas it doesn't make that does. I'm thinking the problem is the transmission so do you guys know any fluids I can put in to get rid of that sound? Or could it be something different?
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post #2 of 2 (permalink) Old 05-08-2009, 04:13 AM
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I would say it could be the Thrust bearing, if stationary does the sound change with letting the pedal in and out?, I would also say that the transmission should take more than 1.5ltrs for sure, mines an auto box which holds 10ltrs and on a change takes 7.5ltrs.


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