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E36General discussion and technical help for (E36) 1992-1999 3 series cars. 318, 323, 325, 328.
The TPS has been orderd and I will check out the VANOS side as you mentioned, the car is not driving me batty as yet, its only a mechanical lump and i can't let it beat me.
That said after leaving the car over night and using one of my other toys I took the car out this afternoon and it drove perfectly for the 30 mile round trip. The only change is the weather, very wet.. electrical/air leak but not mechanical by the looks of things.
After reading some of the follow throughs, it's almost sounding like and electrical connection - like a ground(s) issue. For reasons:
a) wet weather - problem didn't seem to be present
b) when cold - problem wasn't as evident.
In both situations mentioned, cold or wet contact seems to be better. When warm electrical contact(s) expand. Start looking for coroded contacts on all electrical connections (green or exposed) Get yourself a small wire brush and start cleaning connections. Especially if car has such low mileage and has been sitting - I suspect you'll find your problem.
Problem solved... While taking the Vanos solenoid off to check I noticed that the pulse generator was loose and the breather pipe was letting in air. After tightening the pulse generator and installing a new o ring the problem has been resolved..