I,m a newbie, Two week owner of an Ebay special. I don't want to get into that topic right now, I'll vent at a future date. But any how, I just went to turn off my car '83 300D and it just kept running. I remembered reading something about shutting down manually by pressing a stop button on the engine. It worked, but I hope it dosen't continue to happen. What is the reason for this to happen, and what can I do to prevent future occurances? P.S. this is a fantastic site, and extremly helpful to the novice.

http://www.peachparts.com/shopforum/showthread.php?threadid=16287&highlight=motor+wont+stop

Welcome to the site, and, not to be a mean guy, try the search function. This is a very common problem and is more than just likely a vacuum problem. The fuel shut off is vacuum operated. When there is no vacuum, the device that cuts fuel stays in the "on" position.

So, do a search on "engine keeps running" or "engine won't shut off" or some other similar stuff and you will find there is enough information to guide you through the repair yourself, or, to know what you want your mechanic to do. The shut-off mechanism fails sometimes and, if not replaced correctly can be catastrophic. So, use the search function again to get smart on that if your problem is the mechanism. Good luck, Jim

__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)

That is what I did.... used his title .... and then chose the longest thread from the diesel forum.... LOL