MY CARS TRANSMISSION WILL NOT ENGAGE

  • Tiny
  • porthos1
  • 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?

Tuesday, April 9th, 2013 AT 2:51 AM

7 Answers

  • Tiny
  • Dr. Hagerty
  • Expert
  • 9,705 posts

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

Was this
answer
helpful?
Yes
No
Tuesday, April 9th, 2013 AT 7:12 AM
  • Tiny
  • porthos1
  • Member

Sure.

Was this
answer
helpful?
Yes
No
Tuesday, April 9th, 2013 AT 12:06 PM
  • Tiny
  • Dr. Hagerty
  • Expert
  • 9,705 posts

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?

Was this
answer
helpful?
Yes
No
Tuesday, April 9th, 2013 AT 8:08 PM
  • Tiny
  • porthos1
  • Member

Yes it did. It was attached to the flywheel on the old engine.

Was this
answer
helpful?
Yes
No
Tuesday, April 9th, 2013 AT 8:22 PM
  • Tiny
  • Dr. Hagerty
  • Expert
  • 9,705 posts

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.

Was this
answer
helpful?
Yes
No
Wednesday, April 10th, 2013 AT 12:38 AM
  • Tiny
  • porthos1
  • Member

Thats fine. Could it be anything like a solenoid or something in that nature?

Was this
answer
helpful?
Yes
No
Tuesday, April 23rd, 2013 AT 7:11 AM
  • Tiny
  • Dr. Hagerty
  • Expert
  • 9,705 posts

Probably not

Was this
answer
helpful?
Yes
No
Wednesday, April 24th, 2013 AT 5:50 PM

Please login or register to post a reply.

Similar Questions