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Old 10-24-2010, 11:31 PM   #1
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Join Date: Oct 2010
Location: Durango Colorado
Posts: 4
My Ride: 1999 BMW 323i
1999 323i GM 5L40E Transmission Rebuild Help


Soon I am going to rebuild my 5L40E transmission in my 1999 323i. Its slipping in 4th gear. My independent tech tested all of my solenoids and pressures and everything points to an overhaul. The car has 202,000 miles on it so its about time anyways.

Do i need to remove the valve body in order to overhaul the interior parts? I would rather stick to the cluches since everything is already operating properly in the valve body.

Any tricks or special tools I will actually need for this transmission would be helpful. By special tools i mean the tools listed in the ATSG overhaul manual not standard overhaul tools.

I am ready to get started on this project and any help from you guys would be great.
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Old 10-23-2012, 10:54 PM   #2
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Join Date: Sep 2011
Location: TEXAS - Circuit of the Americas doing laps with my M5 and coming in for a pit stop.
Posts: 3,460
My Ride: 03 330iT SportWagon
Did you have success in rebuilding you 5l40-e? I am about to do this as well.

Any siggestions? Which kit did you use?
BMWCaptain is offline   Reply With Quote

323i, 5l40e, overhaul, rebuild, transmission

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