fuel gauge problem

In order to buy the float you might as well buy the pump. These parts are hard to locate by themselves. Access the wires at the pump. Black is sensor ground & yellow & black is the signal to the dash. If you cut the yellow & black wire then watch the gauge as you ground it & leave it open you should be able to see the gauge sweep. These cars have more problems with a bad connection behind the instrument cluster. Try tapping on the dash. If the reading changes that's likely the cause. Take out the unit & take sand paper to the connection brass.