Well here is the latest and hopefully last update. Dealer called to let me know they were replacing the crankshaft position sensor. All work was covered under Starmark warranty and they are refunding my 80 bucks diagnostic charge. Thanks to all for suggestions. All's well so far.......

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Donwo
1999 SL 500 Sport (30K miles)
1998 E320 (SOLD)
1989 560SL (SOLD)
1987 300E (TOTALED)
1986 300E (SOLD)
1984 300SD (SOLD)