well, my father and I checked rest of the fuel sending unit system, Voltage regulater and wiring, and came down to the fuel sending unit itself must be bad, so I ask our local part store and they dont sell sending units.
what vehichles could I get a used sending unit out of, is it just A-bodies with a /6. I have a 71 Valiant /6 904 4-door. I think Year one sells one, but they are expensive.