Hi I have this problem for a long time, the car will start and quiets after 15 or so minutes now it don't start at all.
I have tested all of the fallowing,
No codes

New fuel pump's and filter

New crank shaft position
Tested spark plug wiring

Check cap and rotors good

Check for power to the injectors.
Fuel pressure 50 psi running and at restart 50 psi
Battery full

Air intake censer cleaned (I think that's what is called)

Replaced Ignition control module EZL

Any ideas what cause this anomaly

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1994 ~ S420


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1998 Monaco Dynasty 40'
1994 S420, 1999 Ford ClubWagen

Are you sure the EZL is good? It's one thing to replace the EZL with a known good one, but replacing with another bad one will not solve anything. I've had that experience with a 1991 300CE. A new EZL cost around $1,800 with a discount at our local MB dealer.

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Fred Hoelzle