I found this article while I was looking for info as to why my W124 was not starting properly. I hope it is opf use to somebody.
------------------------------------------------------------------------
Troubleshooting D-Jetronic
No start and fuel pump not working;
1) Test the fuse, relay, wiring and fuel pump.
No start and fuel pump working;
2) Test the main relay and power from ECU. Ensure there is a good ground from ECU terminal #11 to ground.
3) If the ignition system has a good...