Hi, I just bought 1991 750il in great condition but having trouble with throttle. after the car warms up , sometimes it does not accelerate over 2000 rpm. after i shut it off and restart it works fine for about 1 minute then does it again. check egnie lite is off and there is no malfunction codes in the computers. I noticed that when that happens the trip meter resets itself to zeros.
can anyone give me an idea waht could it be?