G05
BMW X5
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01-30-2026LAST POST
01-24-2026
Cousin sent down his 15 yr+ project for me to have. He sent it after it was engine and manual swapped. Car has not started since the swap. I got battery wiring done, electronics turn on, starter clicks, but engine doesn't crank.

Does this plug near the bell housing have something to do with that? I just noticed it today.

Hopefully you can see in the photos…
(taken from drivers side of engine bay)
An image attached to this post, provided by the posterAn image attached to this post, provided by the poster
01-25-2026
Those are reference sensors. Motronic 1.0 had them on variety of chassis.
01-26-2026
M-technik-3 wrote
Those are reference sensors. Motronic 1.0 had them on variety of chassis.
Sorry, should have put more info.

The car is an ‘89. iirc, isn’t it Motronic 1.3?

Engines out of a 90 535i
01-26-2026
03F wrote
Engines out of a 90 535i
You need to talk to the E34 or E38 folks.
01-30-2026
M-technik-3 wrote
So car is running fine without it? I would set up an account on https://bigcoupe.com/phpBB3/index.php
Unfortunately no, I have never seen the car run. Was seeing if this could be one of the many reasons why.

Think I’m going to have to make an account, was trying to avoid the $75 registration.
01-30-2026
Go to mye28.com and present the question they have the same drivetrain.