2003 7.3 Died on freeway and will not start

[studwyck1]

I let a friend drive my truck to haul a quad this past weekend when he got low on fuel (light came on). Pulled into a gas station that did not have diesel so they went one more exit only to never make it. Long story short, they put 5 gal of diesel in it and primed the fuel bowl and would not start and had to be towed home by a Cummins. I've been messing with it all day and here is what I have:

Replaced CPS with 3 different units (1 used and 2 new)
Tach does not move
10.7v during cranking on battery charger
No codes
Oil level full (was down a couple of quarts) as well as HPOP full
Disconnected DP tuner
Disconnected batteries for 10 min
Oil pressure builds on factory guage when cranking

I'm guessing I should check fuel pressure? Sounds like pump turns on however...

Any suggestions?

[studwyck1]

Codes we found with a scanner:

P0603 powertrain control module kam test error
P1670 electronic feedback signal not detected
P0670 control line fault - glow plug
P1832 tranny x-fer case differential lock up solenoid circuit failure
B1483 brake pedal input circuit failure
U1058 invalid/missing data for tranny
U1059 same
U1262 communication bus fault
U1027 invalid or missing date for rpm

We also got it to run on ether but as soon as the we stopped ether treatment it stalled. We also drained water seperator and put in a new fuel filter.

Anyone have any suggestions?

[buckarootrucker]

has it ever stumbled? (real quick off on?) mine was a cam sensor, $25 part and @ 5 min to swap. Fired right up, no prob since.

[studwyck1]

I've tried 3 already. Thanks though!

[jethro]

could possibly be the fuel pump if it ran out could have killed it by runing dry

[jroller]

Either fuel pump or your F5 came unconnected I bumped mine going down the freeway and the truck immediately shut down. Would not restart until the f5 control module was re attatched.

[studwyck1]

We were thinking fuel pump or possibly computer. I need to get a fuel guage on it to see what the pump is doing. It does turn on but may not be pushing enough fuel.

As for the tuner, I disconnected it from the computer and the truck still would not fire.

Thanks for the threads~

[cliford]

since the tach does not move dosent that indicate bad computer?

[studwyck1]

Fuel pressure at the bowl was zero. Mechanic friend of mine has heard of the sending unit pick-up tubes in the fuel tank snapping off before so he recommended filling the tank completely full of fuel. Fired right up! Down to 3/4 of a tank and she is still running so maybe I just needed more than 5 gal to prime the system? Or the sending unit is snapped off a couple inches from bottom of tank? Bad part is I broke my ICP sensor putting in a fuel guage.

[Diesel Monkey]

Check fuses under hood.