Prostar shut off while going down the road

Cummins used to have a 4 wire connector that main batt powers and grounds it doesn’t always have 4 wires in it I’m not sure on that year might be too new for that if not you can PM me your ESN or last 8 of the vin I can tell you pin location and wire number. If it is a voltage issue it is more than likely an ignition power if you don’t have a CEL. Could possible be a fuel issue still, but I would check that first

 

Cummins has a restriction fitting that is installed to simulate a full load to perform fuel diagnostics. It could possibly be an issue with one of the solenoids or the fuel filter head. Hard to say without knowing if there is reduced pressure or increased restriction under load

 

Did you find out what was the problem with your truck.?