TheSouthernRebel01

Thanks I've tried that and the plugs still gets voltage but only like 10 volts instead of 12 when turning the motor over and pin 5 doesn't have the voltage.

The LP is straight wired so I know it will work. But with the injection pump plugged up normally the pump won't work right. Not enough psi to push the fuel out. But when the injection pump is straight wired it works fine. I would like to know is there a way to test the wiring to check to see what he problem is? Thanks

Yes the wait to start comes on and goes off like normal. I checked the codes am I got a p1693 and p0230. But also the lift pump is straight wired. But last night we could get diesel through the lines at low pressure but not enough to start up. Then with it straight wired the pressure went back to normal an started up. Almost like there's something cutting power not allowing it to start.

Yes the starter is rotating the engine. When the pump was straight wired the truck ran and idled but then the original plug is in the engine won't start up. I know the engine will run. But electronically I don't know what's not letting it start up.

Ok so I put a new vp44 injection pump on the truck thinking that was the problem. But it wasn't I turned the truck over and over and wouldnt crank. I unplugged the rear plug on the pump and straight wired the pump and cranked right up. Then I checked the plug pin # 6 and 7 gets 12 volts on the on position and 10 on the starting position. Pin # 5 doesn't have any voltage so it's not that. Anyone know what or why the electronics won't work and allow the truck to crank? Thanks.