DT466E Rebuilt. Ran, then no start.

The IPR failing will not give you injector faults. I have seen several IPR's fail where the
engine would start and run then quit after a few seconds. The IPR and the sensor do fail.
Injector coils also fail. You may have more than one problem.

 

Servicemaxx J1708 the software to scan your engine was available as a free download
on Navistar's website. You would need to find a communication adaptor and the software for it.

 

I would check the resistance of the injector coils and see if one is shorted.
You can throw a lot of money at it without scanning it.

 

These engines will run poorly for a long time after work like this until all air is out of both the high pressure oil system, and fuel system. From your story, you haven't ran this much yet. This will naturally log ICP codes because of the excessive crank time to get oil circulating throughout the engine. The high pressure oil rail will be a big air bubble until you get a chance to run this under load to purge all that out. This series of ECM/IDM will also log injector codes if the resistance range is only slightly out of spec by 0.1 of an ohm, so I take those codes with a grain of salt. If you are able to see ICP pressure on your scan tool, it needs to be building at least 500 psi to start. (700+ psi on a healthy system). You also need at least 20 psi of fuel pressure while cranking, 50 psi when running as well. Most heads have a schrader valve near the front you can purge air from the fuel in the fuel rail inside the head. With the rebuild, does this have fresh oil, fuel and filters? Have you verified any of this? These are the basics and easy, start with easy first.

 

Once fired, it should at least idle on it's own. Some can be stubborn to start. Again, they will run really bad, almost scary until that air works its way out. It won't hurt to give it a little throttle if that is what it takes, but after a few minutes of 1000 rpm, if it won't stay running then you'll have to look deeper.