Vibrating idling being caused by an electrical issue?

[02BMWX5]

Hey guys any updates on this issue

I have a 2002 with the same issue only when it's cold

When I put it in reverse it vibrates and the rpms go down and it stalls

Start it back up and its fine

Only does it in reverse

I have replaced the idle control, pCV, oil seperator, crankcase valve

Thanks

[alromcc]

Hi guys! I am a new owner of 2000 X5 4.4i E53 here in Qatar. I got my car last October10. I have been looking in this forum and it helped me alot. Thanks to all members.

I would like to share my experience on my previous rough idling problem during cold starts, and hope that this could help someone with same case

1) I cleaned the throttle using carb cleaner and tissue paper. I replaced the part #2 o-ring seen below

2) I cleaned the MAP with carb cleaner spray.
(blow dried the MAP using hair dryer before placing back)

3) Replace item 11 (see below - as advised by my friend at BMW service center, this part usually causes major leak resulting to rough idling)

4) Placed screw clamp on the small vacum hose attached at bottom side of part 12 above. (hose at end is already loose)