My '88 300 TE (wagon) (125,000 mis.) has had a new fuel pump relay, crank sensor relays, and ignition control module replaced in the last few months, and a new fuel pump put in in '99, but the engine still dies while driving, from 30 mph to 50 mph and also at a complete stop. When it dies, the dash lights all come on, and it can be restarted approx. 5-10 seconds later (if you try and turn it over immediately after stalling, it won't--it sounds like it's flooded). My mechanic is completely stymied. Anyone out there know something that hasn't been covered yet in this discussion?
I'd really appreciate it. Thanks.

Suggestions:

0.- Diagnose thru terminal 3 of module control (Duty Cycle)
1.- Check the fuel pressure regulator
2.- Check the EHA
3.- Microswitch
4.- Ignition Coil (also the wire)
5.- Cap & Rotor

__________________
1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car
609 Certified

I don't know if your model has an OVP (Over Voltage Protection) relay. If so, it might be the cause.
I had these symptoms on my a 1993 , 220 E model.

I hope this would help

My OVP relay was replaced recently. My cruise control has been erratic, so am checking that lead out.

Search for threads started by Ron Johnstone. He has a late 80s 300TE that had similar problems. He changed just about everything in the fuel system to no avail. I don't remember what finally got him back on the road.

Sixto
91 300SE
87 300SDL
83 300SD