Check OVP relay and Fuel Pump Relay.

Might also be the crank position sensor.

Its possible you may have gotten a bad distributor rotor....I did on my 300E, it was a Bosch that tested WAY out of resistance spec (1600ohm vs. 1000 +-100 that it should be) after only a few months. I bought a NAPA replacement that tested perfectly at 1000.5 ohm....and now it has run perfect ever since. (over 3 months now)

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)