Mechanics

BMW 540I TORQUE PROBLEM

1998 BMW 540i

My cars transmission will not engage. Forward or backward. I had a mechanic look at it and said the fluid was fine but the temp of fluid never changed when the car warmed up. Like its not pumping. Any ideas? I recently installed a newer engine. Did I do something when I did that?
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Porthos1
April 9, 2013.



That is possible, this process could take several steps to get through, shall we continue?

Dr. Hagerty
Apr 9, 2013.
Sure.

Tiny
Porthos1
Apr 9, 2013.
Good. First, did you properly index the torque convertor into the pump? What that means is did the TC come out of the tranny during the swap?

Dr. Hagerty
Apr 9, 2013.
Yes it did. It was attached to the flywheel on the old engine.

Tiny
Porthos1
Apr 9, 2013.
Then I recommend removing the transmission, remove and inspect the torque converter to see if there is an issue with the pump/torque converter interface.

Dr. Hagerty
Apr 10, 2013.
Thats fine. Could it be anything like a solenoid or something in that nature?

Tiny
Porthos1
Apr 23, 2013.
Probably not

Dr. Hagerty
Apr 24, 2013.