Have 1984 528i E28 289,000 Km. About 2 weeks ago engine died while driving. After about 1 minute motor restarted as if nothing was wrong. This happened several more times. Noticed that the tacho went immeadiately to zero. Since then no further problem. Suspect Motronic unit or one of the sensors. Has anybody had this experience and any suggestions what is the best place to start looking.
Mike