E300 (diesel)1996 cuts out at idle and while crusing.

[ubago]

The car cuts out at idle and while crusing.

The cutting out is it sudden and total.While I'm driving I always worried and looking for someplace to pull over.

Priming pump 40 secs to start does nothing other than drain battery, wont start.

To get started again, have learned to
1) turn ignition off
2) Wait more than 60 secs with the key in my hand
3) turn ignition on and start
4) Then is now possible to start and drive, but continues to cut out w/o warning

Computer disclosed no error codes