Hi. I have a 1991 520i M50 with the sealed Auto Box. The Transmission has started to play up with the box going in to limp mode and the engine will misfire slightly. If i turn the ignition off for approx 5 minutes the Error light has gone and the normal selector lights come back. It seems to re occur if i have left the car idling for a while or if i move slowly ie u turn. Any help would be great