What is the reason for the fuel gauge not changing?
2 Answers
The reasons for the fuel gauge not changing: 1. Problem with the car's fuel float: The fuel float is the fuel level sensor. Check if the plug of the fuel level sensor on the fuel tank is loose, and observe whether there is any blockage in the sliding process of the fuel level sensor; 2. Problem with the fuel gauge circuit on the car's dashboard: The dashboard should be removed, and a multimeter and a large needle should be used to accurately check the corresponding fuel gauge circuit on the dashboard. The car's fuel level gauge displays the amount of gasoline in the car. It is particularly important to note that when the fuel gauge pointer falls below the red line and starts to alarm, although the car can still continue to drive for 30 to 40 kilometers, it is not recommended to wait until the fuel level alarm to refuel.
I've been driving for almost thirty years and have encountered several instances where the fuel gauge suddenly stopped working. This is usually related to the fuel float getting stuck in the tank, especially in newer cars where debris can jam the float, causing the fuel level display to fail. Another common cause is a faulty fuel level sensor, which tends to malfunction due to aging or poor electrical connections over time. I recommend starting with simple checks, like ensuring the fuel cap is tightly sealed—sometimes a loose cap can affect sensor readings. Additionally, if the car's undercarriage has been scraped, the sensor might be severely damaged. Never ignore a stuck fuel gauge, as it impacts driving safety—running out of fuel and getting stranded is a real hassle. It's best to visit a professional repair shop promptly. Mechanics can quickly diagnose the issue with a multimeter and inspect the entire fuel system for proper operation. Paying attention to this during regular maintenance can save a lot of trouble later.
