Truck issues, need help

[Albery's Lawn & Tractor]

I have a '03 Dodge 3500 w/ 5.9 cummins, truck has 150K miles. Truck now seems to have no power, can't pull an empty trailer without wanting to over heat. New transmission, flushed radiator, new water pump and thermostat, no check engine light. No oil in the turbo intake. Any thoughts of what this might be?

[Tizzy]

fuel system issue? did you do any diagnostics on the fuel system.

[AEL]

Check your lift pump.
Posted via Mobile Device

[Albery's Lawn & Tractor]

But would the lack of fuel cause the truck to want to run hot?

[turboawd]

did an intake boot pop off by chance?

[bobcat_ron]

Head gasket or thermostat?
Posted via Mobile Device

[AEL]

Caused my 06 to run hot . Installed an aftermarket fass150 and it was way better , not to mention way better filtration.
Posted via Mobile Device

[LuckyFlyinROUSH]

Sounds like major boost leak. PSI normal? Fuel pressure good?