Own a 94 e320 w\96,000 mi. Best way i can describe the behavior, it acts like a fuel vapor lock condition.
Car starts and runs like a champ cold and hot most times. Sometimes after driving will not start, cranks without action. Try, try, and try again, then suddenly starts and runs like nothing ever happened.
Engine harness has been replaced along with ignition components.

I don't have a technichian manual so looking for help from experienced others.

OVP relay

Do a search..there is a change on that part and you probaly have the faulty original.
Archieves.

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A Dalton

Thank you, is that some kind of position sensor?

No..it is the main power supply regulator for the Engune management computer.

Take the old one out and see if it is the old part number..if it is , replace it with the new part number OVP

Archieves ............................................it is all there.very common fault

1994 C220 spark/no spark

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A Dalton