I am from the US but now in Northern Alberta on a hunting trip. Truck is up in the back country and has quit. It has two factory gas tanks, I can't hear either of the fuel pumps will come on when you turn the switch on. The problem started as an intermitting fuel starvation issue. Truck would act like it ran out of gas then pick up and go again. Switched tanks back and forth but it got worse throughout the day and finally will not start at all. I have listened to both tanks when the ignition switch is turned on but can not hear the pump come on for either tank (switching the selected tank with the switch on the dash). We went through some bumpy terrain just before the problem started so I am thinking maybe a wire might have come loose or got broke somehow. I am asking for wiring schematic help so I can check for voltage in the correct place going to the fuel pumps. Both tanks are full of gas so for now dropping either tank is not an option.


1997 with a 460

 

Need more information.
Is this a California truck or a 49 states or a super duty truck?

 

49 states truck

 

Ground pin #6 of the self-test plug under the hood, turn on the key and see if the selected fuel pump runs.

If it runs short pin #2 to pin #6 of the self-test plug under the hood, turn on the key and see if the selected fuel pump still runs.

If so odds are you have a bad PCM Computer.





Wiring diagram for a 1995 but yours in a 1997 49 states 460 would be the same.

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Bill K, Thank you so much for this info. We must have broke wires between the selector switch and the tank. We had power to the inertia switch, power to the selector switch in and out, but no power to the tanks. We could get access to the harness at the rear tank so we ran a straight wire from the battery to the brown/w wire near rear tank and that pump fired right up. The truck ran fine all the way out of the bush country to town. I really appreciate you taking the time and sharing your knowledge. You bailed us out of a really tough spot.