Thread: Fuel gauge dead

Almost certainly a wiring issue, but first check fuses. If no other gauges and instrument lights are not affected, I would be looking at the sender area. It is just possible the sender has failed, but it is more likely to be a bad connection, possibly earthing. The gauge itself is very unlikely to be the issue.

If there are other symptoms such as instrument lights changing brightness when the ignition is switched on, or the temperature gauge reading changing when the lights are switched on, look for an earthing issue in the dashboard area.

Above where the rear muffler lives (LH side behind the wheel) is the connector to the fuel pump and gauge. Unplug the connector and on the vehicle harness side bridge the black wire (earth) to the small gauge wire. N.B. don't bridge out the fuel pump wire, white/purple stripe. Turn on the ignition and see if your fuel gauge goes to full. If it does you probably need another fuel tank sender.