I've already posted at the beginning of the year.
This is the problem.
My V8 starts normal and runs nicely after a certain time when the engine has reached about 60 degrees Celsius it simply goes out and the relay for the petrol pump is no longer equipped with electricity.
I wait 1-2 hours until he cools down he starts again tatellos.
Reperature:
I changed the petrol pump relay and the temperature sensor for the control unit (not for the control display) but without success.
V8 is oldt built 22.09.1988 but top in shot
if you could drive with it
I am grateful for every hint
Jürgen 
