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What are the reasons for the fuel gauge not moving after refueling?

2 Answers

DelMaya

09/01/25 3:57am

The reasons for the fuel gauge not moving after refueling are: 1. Check if the battery has power; 2. Check if the fuel level sensor is faulty; 3. Remove the dashboard and use a multimeter to locate and test the circuit corresponding to the fuel gauge on the instrument panel. The function of the fuel gauge is to display the fuel quantity in the car's fuel tank. The fuel gauge consists of a voltage regulator's fuel indicator and a fuel level height sensor. The low fuel level alarm device is designed to light up and alert immediately when the fuel in the tank falls below the specified level, to draw the driver's attention. Precautions for using the car fuel gauge include: 1. Refuel before the warning light comes on, as too little fuel is detrimental to the normal operation of the fuel pump and reduces its service life; 2. Indicator deviation: When replacing the battery or fuel filter in daily use, the fuel gauge pointer may show a lower position than before upon restarting the vehicle. After opening the fuel tank, the pressure is released, causing the fuel level to drop, which is a normal phenomenon of display deviation.

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Deborah

09/13/25 6:48am

After driving for so many years, I occasionally encounter situations where the fuel gauge doesn't move after refueling. The most common issue is the float sensor in the fuel tank getting stuck, especially when using low-quality fuel with many impurities—dirt and sediment can prevent the float from moving, causing the fuel gauge to remain unresponsive. Another possible cause could be a problem with the dashboard's circuitry, such as loose or aged wiring, leading to signal transmission failure. Additionally, if a fuse blows, the fuel gauge may also malfunction. This is quite annoying because an inaccurate fuel gauge can be dangerous if it leads to running out of fuel and stalling, especially on highways. I usually take my car to the repair shop as soon as possible for inspection. Using high-quality fuel and regularly cleaning the fuel tank can help reduce the likelihood of this issue.

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