well long story short i just put a rebuilt engine in a truck for a guy , got it all in , started right up , i wnet about 5 min down the road and shut it off to go into to safeway and come out truck started right you , then it stalled wouldn't start , so a towed it back to the shop and checked some stuff , fuel pump is working , new fuel fitler 2 miles on it, fuel is clean no water , i have fuel at the CP , and at the injectors , but no running truck , i pulled codes

p2509 ecm/pcm low power input signal intermittent

p2607 b air heater low input

i have the batteries on charge , and i going to check all the grounds and clean them all again as i just did when i put the enigne back but am at a losss hear ,,,,, any help would be great thanks guys

 

update

i did all the grounds and added some more , and cleaned everything . now i have no codes , but the truck still won't runn . i cracked open the injector line and i have no pressure there , so does that mean CP3 is no good ??????? is there a way to check it ? are any other things i can try , i do have lift pump pressure at the cp3 . just no high pressure at the injectors just about the same as lift pump pressure

 

Not sure about CR diesels, but doesn't the regulator in the fuel rail control pressures?

I remember reading something about FCA rail adapter or something like that?