low mileage 6.0 starting issues

[Farmrod]

05 6.0 with 41000 miles was running good then all of a sudden won't run would start and sputter then die now just cranks hooked up scanner voltage was low replaced batteries voltage is back where it should be ficm voltage stays at 48-49 volts icp is 1475 while cranking what else should I check.. fuel pump is running I plan to change filters in the morning any help would be greatly appreciated

Chris

 

[Idiesel]

Maybe a crank or cam sensor?

 

[Farmrod]

Wouldn't there be a code with a sensor problem?

 

[RNally]

No codes at all?

 

[Cutting-Edge Diesel]

unplug the ICP sensor and see if it starts. Or see if it shows ICP pressure with KOEO. If it does the ICP sensor is bad. just something to check

 

[Farmrod]

No codes I tried the unplugging trickband it still just cranked ill checked to see if it registers like you said tonight

 

[Farmrod]

ICP is showing 7-9psi KOEO then goes to 2k+ while cranking