fuel guage stopped working

[Klwagner4566]

I am certain there is a thread somewhere - but I can't seem to find it -I have a newer 23 gallon tank and sending unit suddenly my fuel gauge has stopped working - all together. What is the trouble shooting process? What do I need to do?

Thanks -

 

[gavindg]

Here is one..
http://classicbroncos.com/forums/showthread.php?t=278066&highlight=fuel+gauge+testing

 

[Steve83]

Key OFF - the gauge should peg empty. Ground the wire at the tank (make SURE it has continuity back to the battery negative post). Key ON:

Does the gauge peg full?

YES: the fault is inside the fuel tank.
NO: the fault is outside the fuel tank.