Fault Code 1117

[Chamberpains]

You may be diagnosing this problem from the wrong angle. What if you low fuel pressure is your main symptom and the truck stalling is the power lost code?

Have you checked your mechanical fuel pump? They have been known to still operate with the internal shaft broken (snapped) until they completley fail.

This could be cause for the low fuel pressure and as the fuel pump skips internally it causes the truck to stall intermittently. Causing the power lost with ignition on.

It may be worth giving the fuel system a good look over 1st. Its a much easier system to check functions. Just so your not running down the wrong rabbit hole with the endless possibilities of electrical problems.