My 85 380sl with 132,000 miles has an intermittant dying problem. This started when engine was cold, usually after trip to the neighborhood quik mart and would die on the way home (appx. 1 mile). It would have to set for 5 minutes or so then would restart and all fine. This happened 2 times per week and sometimes not for a month. My mechanic kept it for a week and encountered same prob. He suspected fuel pump relay behind glove box. We replaced it. Now dying has only happened when engine temp is around 85c (not quite warmed up) but it will restart within 1 minute. The tach, at this temp,occaisionally does a surge to 3000+/- when engine is really at 1000rpm. Engine is not surging just the tach reading. Tach issue has be less frequent than dying issue.