97 3500 V10 cranks but won't fire

[Scott Sramek]

Okay so I changed the fuel pump Wednesday truck ran great Saturday morning left my house got 15 seconds up the road it started sputtering, died and hasn't fired since. I've checked the following to try and diagnose the problem.
fuel pump working
ASD relay good
all fuses good
there's fuel at fuel rail 45psi sitting 50psi while cranking
Pluse at injectors
crankshaft position sensor reading 5v
camshaft position sensor reading 5v
good spark at every cylinder
new plugs proper gap .40
new wires
Put a code Reader threw a P0172 did a key check code read threw code 12 battery disconnect between the battery and the PCM. I'm out of ideas and before I just start throwing new sensors and valves at it figured someone might have an idea what it could be since haphazardly installing new parts could get pricey!

 

[EvilSpirit]

I'd try spraying some carb cleaner or ether into the throttle body to see if it fires then.

 

[Scott Sramek]

I will try that, thinking if it fires it may clear up?

 

[EvilSpirit]

Just trying to separate the ignition from the fuel side. Gives you a system to diagnose. And the injectors will burp an air pocket or pass water or debris better on a running engine than a cranking one.