Hello,
Its so great getting help when we get stuck with our toys.
well, I have a 1992 bmw 535i.
it had few idle issues but I did everything possible to get it solved.
90% solved now.
what I did....
-valve adjustment as it needed it anyway.
-vacuum leaks to the best i could do.
-icv and maf clean up.
-dipstick rubber washers.
-oil sensor on pen as the oil level kept flickering...now solved.
-oil sensor.
-rubber booths and lines.
-gas cap.
-spark plugs and wires.
-ignition coil as I have seen e34s drive rough.

-the problem is that it will not die or stall,no error codes but in idle its rough and for some reason the dash digital lights flicker a little.
-Just of recent in the last two days with the cold weather in Toronto, the battery light and ABS light come on but go off after 10 seconds.

I bought another e34 from a family friend for cheap but fill bad to start removing and experimenting with parts as this car runs well and drives great...so I will sell it soon.
I think someone else should enjoy it instead of using it for body parts.
so I ask if any one can try and help with this issue I have on my automatic 535i.