The crank position sensor is only a diagnostic tool, and if you don't have the MB tool to plug into the X11 socket, you cannot use it anyway. There should be a place to plug it though, I will look on the TE and see if I can figure it outl.
The "lost" vac line should be connected to the throttle body with a "y" fitting that only has vac when the throttle is open. On the right side of the pic is where it goes, in the large hose-to-small-hose fitting. This is the charcoal canister evaporative control purge line -- pulls the vapors off the charcoal canister through a calibrated orifice only when the throttle is open. Will check that too, it's the same on the TE.
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!