Hi, gurus to the rescue, here's the challenge. Got the MB back from the shop and now will not shut down. (Not a MB tech so didn't want to spend 55 an hr for gues work).
Took some readings and here goes: At the 4-way(next to the chk valve) there is~20 in.hg., at each of the ports there is the same reading. With the ignition sw. in 'off' engine runs until I connect vacuum pmp to the brown line,and it responds and cuts off. B-U-T when I connec the red/w tracer and clear(?) w/tracer to the 4-way the engine runs and the port w/ the brown line has ~ 5in/hg. and keeps on running.
Sure would appreciate some experts. I'd hate to invest more into this than the value of the car, already 900 into it for R/R of Inj. pmp.
Oh yeah, it did work properly before the R/R of inj. pmp. and have not found the intuitivly obvious!

Thanks ya'll Leon H.