Larry, sorry to hear your 300E is having issues still. Mine is at the mechanic's shop AGAIN! I replaced the check valves in the fuel pumps, adjusted the Lambda again, put a new adjustment screw on, etc. Still...it runs good on the highway but doens't like to start in the morning or sit at stop lights. My mechanic has a complete used fuel distributor unit he is installing to see if that makes any difference. We have tested and tested...can't find anything wrong. I am to the point that I'm hoping a tree will fall on it, but alas, Dallas doesn't have that many trees.
I will let you know what he finds...maybe it will shed some light.
88 BMW E32 735i (make it go away)
95 Volvo 960 "Inga" (valve problems)
95 Nissan Maxima (the indestructible)
89 Ford Ranger XLT (ugliest truck in the South)