How do you troubleshoot fuel gauge for 1997 Mitsubishi lancer?

To troubleshoot the fuel gauge on a 1997 Mitsubishi Lancer, start by checking the fuel level sender unit in the fuel tank for any issues, such as a faulty float or wiring problems. Inspect the wiring harness and connectors for corrosion or damage, which can affect the signal to the gauge. Next, test the gauge itself by using a multimeter to ensure it receives the correct voltage. If all components check out, consider replacing the gauge or the entire instrument cluster as a last resort.