i have Isuzu FTR that runs for 10 min.and dies,next morning will start no problem for another 10 min
This could be a wiring issue as things tend to expand when hot and its possible a poor or partial electrical connection is being pushed apart on one of the major sensors so check the connection plug and wiring to the following;
Crank position sensor
Cam position sensor
Throttle pedal position sensor
Also worth checking the connections to the fuel pump for the same reason - unplug each in turn and give them a good squirt of switch / contact cleaner - Not WD40
and also unplug and inspect the power relays and fuses for signs of overheating or corroded terminals - so the ones for the ECU
And also unplug the wiring loom connections in the engine bay one at time and inspect for corroded or recessed pins.
this is general knowledge answer.you are talking about fuel pump connectors and catalytic converters and the truck is diesel and dose not have them.
i need technician that is familiar with that model Isuzu diesel truck