Filled up in the morning at a station I frequent and headed on down the highway. About 20 miles into the trip I felt some crazy vibrations like the tires came out of balance.
Brought it to the shop and assumed it was injector(s). Had them flowed, all good. Had a melted piston. Piston replaced. Truck starts and will idle all day long. When you drive it the truck will simply cut off. No codes.
Low pressure pump test good. Through diags it was determined that the truck was losing pressure at the rails, to the tune of 190 psi. So, sounds like a high pressure pump right?
Cab comes back off and the high pressure pump is replaced and that stupid thing is $1000.00, something of which I was not happy about doing since it I drove the truck to the shop. Time for another test drive. Drive is a little bit better on the psi but still losing pressure so doing the same thing. Hmmm, maybe there is something clogging the lines to the high pressure pump.
Cab comes back off and the lines are blown out. Test drive again. Drive seems to be fine but when you get on it a little it just shuts itself off and dies.
Does restart after a few tries. Any suggestions?