Why does the fuel gauge not respond after refueling the car?

[SanCooper]

Check and troubleshoot the issue where the fuel gauge needle does not move and the indication is inaccurate. This indicates that the fuel gauge is not receiving a signal from the fuel level sensor, suggesting a fault in the fuel level sensor. Proceed with the following checks: 1. Loose fuel level sensor connector: Inspect whether the fuel level sensor connector on the fuel tank is loose or has oxidation or burn marks. If so, clean or replace it. 2. Stuck fuel level sensor: Remove the fuel level sensor, place it vertically, push the float to the highest position, and let it freely fall to the lowest point. Invert it and push the float to the high point again, allowing it to fall freely. Observe if there is any sticking during the float's sliding process. If so, clean or replace it.

[LeReagan]

I've been driving for over 30 years and have encountered the issue of the fuel gauge not moving after refueling several times. Once, after filling up the tank, the needle stubbornly refused to budge, and the empty fuel light remained on even after driving for quite a while. It was terrifying, worrying about suddenly breaking down on a long trip. I checked the fuel cap—it was screwed on tight; inspected the wiring connections—nothing was loose. Later, I discovered that the float inside the fuel tank was stuck, probably due to sludge buildup. Replaced the sensor, costing a few hundred bucks to fix. This problem is common in older car models, often caused by wear or deformation of the float. My advice to fellow drivers: after refueling, wait a few minutes—the needle will gradually rise; if it still doesn't move, check the fuse or head to a repair shop immediately. Don't delay, as misjudging fuel levels and breaking down on the highway is dangerous. Always choose high-quality fuel to reduce impurities. Safety first.

[AlanAnn]

As an ordinary car owner, it's really frustrating when the fuel gauge doesn't move after refueling. The most common issue is with the fuel level sensor: the float in the fuel tank gets stuck by debris and can't move freely, causing the gauge to malfunction. Blown fuses are also a frequent problem; they're located in the instrument fuse box, often in a small compartment under the steering wheel. Broken wires or poor connections can also cause trouble. The most troublesome impact is misjudging the fuel level, which might leave you stranded halfway with no fuel—I've been there before, having to call for a tow truck. Repairs are usually straightforward, like replacing a fuse for just a few bucks. My advice: after refueling, drive a short distance to see if the gauge changes; if not, get it checked quickly. Don't hesitate—early resolution means fewer headaches.

[BennettDella]

The main reason for the fuel gauge not moving is the failure of the fuel level sensor: the float is stuck in the fuel tank and cannot correctly reflect resistance changes to the instrument. A blown fuse in the circuit, aging wiring causing an open or short circuit can also lead to signal interruption. Fuel tank design defects, such as internal deformation, can affect the float's range of motion. Use a multimeter to diagnose the sensor's resistance, which should normally change with fuel level. From a safety perspective, repair it as soon as possible to prevent sudden failures. It is recommended to learn some basic automotive circuit knowledge for self-inspection.