The Chiltons were great. You could get near factory level and not pay sometime several hundred to get the factory one.
Since the switch is melted inside, you have to have a short somewhere, possibly in the dash which might help explain the fuel level issue.
If you look in the back of the Chiltons, thee should be wiring diagrams, (I don't remember but the Haynes do), you can look up the diagram for the fuel system and look for the pump and then look for the colored wires. Then you can trace them to see where they go.
If the truck is running, at least one thing is sure, the relay is working. I do not know if they have seperate relays and pumps. You could find that out in the wiring diagram.
I think putting on a lift will help, but a lot of the wires run down the drivers side under the carpet and then if any are under the truck you will have to remove some of the plastic shielding which is heald together with electrical tape.
On the tank there should be a feed hose for each tanks, a return line for each tank, (which is the high pressure hose), and a vent for each tank. Then you also have the filler necks and vents for the filler neck. Yeah, that an octopus.
It sounds like there a re two internal tank, (In Tank), pumps and those are the feed and return lines for each. That menas you probably blew out the electrical for the one tank with a short somewhere, That is a scary thought having an electric pump in a tank of gas, ain't it?
There are probably 2 relays one for each pump and the switch melted when the one circuit blew and it is having an effect on the fuel gauge by backgrounding or soemthinig.
You can use wiring diagrams to see what goes where. However I think you're going to have to trace down a short or the one pump seized up and burnt the wiring up. That means the tanks might have to be dropped some to get them out. Then if it is not the pump you still need to find the short.
Try looking at the diagrams and what you replaced wiring wise and I bet you will figure it out.
Thursday, September 15th, 2011 AT 6:08 PM