My '79 240D won't stop when I turn the key off.
It's a manual trans., so I can stall it without resorting to the "stop" lever.

*All the vacuum locks work perfectly.*

1. fuel cutoff valve?
2. faulty ignition switch?
3. *will it hurt anything to put off repairs for a few weeks?v (it's cold here)
thanks

My guess is you have a vacuum problem- common occurance on diesels (that's where the word dieseling comes from) check all vacuum hose connections they are small clusters and sometimes jar loose particularly if a non-benzer has changed the oil filter.

My guess is you have a vacuum problem- common occurance on diesels (that's where the word dieseling comes from) check all vacuum hose connections they are small clusters and sometimes jar loose particularly if a non-benzer has changed the oil filter.

Be sure to look at the hoses that are under the hood color is brown. They are the ones for the shut off circuit. Do not put off this repair. Oil is getting into the system if the diaphram has failed for the shut off.

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Benzmac:
1981 280GE SWB
1987 16V
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM

Got the problem fixed.

One of vacuum line to the shutoff was leaking.

Car was in the shop 1/2 day. $30.