Insightfull replys all! thanks! Engine is now shutting off, but it takes about 2 seconds. As stated the vac pump mainline 19mm nut was loose.

I am now hearing a periodic flap closing under my drivers dash speaker area. (even when climate control off) Did I disconnect something when pulling instrument cluster?

The lines may be backwards on the back of the key shut off valve! One is blue/brown and one is brown. Does any one know the correct orientation?
Not much room for my hands through the instrument cluster hole or from underneath. Do I need to drop the steering column, remove key cylinder,
or steering lock to access and swap lines-clean/replace? (I would rather not).

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1993 Mercedes Benz 300D 2.5 205K (ex wife's)
1984 Mercedes Benz 300SD 320K (SOLD)
2004 Mercedes Benz C240 75K
1995 GMC Sierra 2WD 5.7L 188K
1983 Mercedes Benz 300SD 239K (SOLD)
1987 BMW 325i 220K (SOLD FOR SALVAGE)

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