I have a 2003 ford f-350 dually with the 7.3 4x4 and i have replace the injection pump all the injectors the lift pump 3 high pressure oil pumps, icp pressure regulater. I hooked up my snap on scanner and I have codes p0603 - p0231 - p0113 - p1280. I also checked battery volts at pins 55 and 25 -51-76-77-103 at the pcm and all is good. any ideas?

SOURCE: DTC Code P0603 and P0231

P0231- fuel pump secondary circuit low
P0603- power train control module keep alive memory (KAM).

SOURCE: 2003 f 350 starts then shuts down 2 or 3 times in

The first thing i would check is the Glow Plug Relay. Depending on your engine 7.3 i think you have, there should be (2 solenoids, or just one) sitting on the top front a little to the right of center. (right bank of engine that is) If you have 2 of them one should be smaller and it is the one furthest to the rear of the engine. It controls power to your glow plugs for cold start up. When you turn the key to the on position the 2 larger wires should both have power. When the ignition is off only one wire should have power. Check this if you do both these tests and only one wire has power with key on or off then you need to make sure that the key switch is sending power to the solenoid. Do this by checking the smaller wire with key off. It should not have power and then with key on it should have power. If this is good and test one is bad then the relay is bad. Note This is not true for the larger realy that sits furthest foward on the engine. The bigger one. This test will not work for it but it controls your intake heater. On another note: This is a timed circut and will "kick out" after about 1-2 minutes. In otherwords it does not stay on all the time that key switch is on it will for for about 1-2 minutes then shut off! Next would be your injectors are getting weak or bad and even your HPOP could be getting weak. or glow plugs in engine are out, In otherwords there are alot of possibilities causing your problems If you are getting a misfire code for your injectors then you may have some weak or inop injectors. Any way this will give you a pretty easy test for the most common failure which is the Glow plug relay. About 35-40 bucks at your local auto parts house.

SOURCE: Won't start but cranks has

i got fiat premier 138 d diesel model when i changed the diesel filter a little bit diesel pour into glow plug wire when i started the engine it starts burn then i replace a new wire but it is also bulging and it got heated then battery got down .i replace solenoid switch which is connected to starter and glow plug but i did not identify the problem. In dash board the glow plug light indicator is not working .in indicator wire i tested with test bulb one connected to positive and connected to the indicator both wire the bulb is lighting I cannot identify the problem and give detail diagram

SOURCE: 7.5 volts at fuel cutoff switch replaced

Yes sure, please keep updated with the result and details.This will help, for further troubleshooting.----- Thanks.Helpmech.

SOURCE: 97 Ford F-250 - turns over but won't start

It's the camshaft position sensor on left passenger they run on same circuit same thing happened to my truck.