Quote:
Originally Posted by Monty's Si
Hi, when BMW dealership changed throttle potentiometer it was at the request of UK BMW HQ Technical people, they explained that the symptoms indicated an air leak or that the ecu was occasionally forgetting the idle start and stop positions of the mass air flow meter this was in effect masking the real cause If your dealerships are struggling to sort out a similar rough idling snag to my own, then I suggest they contact Rebecca at Sycamores BMW service department and ask how they fixed Paul Leggett's 320si. I hope this helps.
Cheers
Paul
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Further to above I've attached photo of the part that was replaced (hope this helps ShereKhan).
Paul