Crank no start

[Jneu]

I have a 04 cummins
Main fuel pump went out
Had shop replace pump and go thru transmission
in less than 200 miles it has died/wouldnt start twice
Next day wouldn't start
Cranks but no start
Towed back to shop it starts
No codes they are unable to replicate problem
The lift pump was replaced 10yrs/100000 miles ago
Shop is at a loss on route to go
And I don't want to get stranded
Any ideas

 

[ramingit]

I have a 2000 dodge ram with 5.9 diesel. Crank no start and sometimes it would start, NO CODE was set. I started by replacing fuel pumps and relays and the final thing I replaced was the crank position sensor. It starts all the time. It is reliable again. Go to Dodge and get the crankshaft position sensor. Do NOT get a Crankshaft position sensor from aftermarket part store. I hope this helps you!
John

 

[Bills86e]

TIP: When attempting to work on ANY electrical, ALWAYS remove negative from battery. Bills86e

 

[houserco]

Check your leads from your battery... and when I say check... I mean with a MM. I've seen about a dozen of these lately where almost every one was a ground issue (including my recent one).