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General E46 Forum
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Old 01-21-2014, 11:50 AM   #1
fishe46
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Join Date: Aug 2012
Location: California
Posts: 4
My Ride: 03 BMW 325i Sedan
HELP! 2003 325i Transmission Problem!

Alright guys im in need of help, recently took my car to my mechanic because I noticed a huge leak below. After inspection he said the leak was coming from the transmission pump. Let me say the tranny was working fine without any issues and the leak was just the pump. So he took it off and sent it to the transmission shop. Got a call that I had to replace the pump, seals, bushings and torque converter. Now said that It cost me $740 for that to be replaced. Before I my mechanic took the tranny to the shop he attempted to remove the torqu converter but was unable since it was stuck. When I picked up the tranny from the shop they told me that they had trouble getting the converter out. Im assuming they fixed it and it was a plug and play for my mechanic. Seems like this was not the case, transmission is now mounted but when I put the car in drive or any other gear it doesn't seem to get the gear or sometimes it does but it feels like its forced to move or something is getting locked. At times the gears work fine and car goes on smooth but sometimes it lags and car doesn't go anywhere.

1. Could the transmission shop mess something up in the process of replacing the pump and converter?

2. Does the ecu/software need to be reset or updated?

3. What could be the issue?

Please note tranny worked fine before without any issues. When tranny was mounted I bought my mecanic 10liters of pentosin atf1 tranny oil since its similar to ZF Lifeguard5. By the way im taking my car back to the tranny shop, they have to see the issue and fix it I believe so since they were the last ones who opened up the tranny.

Thanks for the tips and help!
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Old 01-21-2014, 04:57 PM   #2
lszlszx
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Join Date: Jan 2013
Location: Socal
Posts: 5,250
My Ride: 328i, XC70
You bet, you should take it back.
Either they didn't do the job right, or there is another problem with the transmission.
This is one of the reasons why tranny shops always prefer to do a full rebuild.

Good luck!
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