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Why Does the Fuel Needle on the Car Dashboard Swing Back and Forth?

1 Answers

McMiguel

07/29/25 7:12pm

The reason why the fuel needle on the car dashboard swings back and forth may be due to a malfunction in the fuel level sensor. It is recommended to visit a 4S shop for inspection and repair as soon as possible. Below is some information about the car dashboard: 1. The car dashboard is a device that reflects the working conditions of various vehicle systems. 2. Common indicators include the fuel indicator, washer fluid indicator, electronic throttle indicator, front and rear fog light indicators, and warning lights. Additional Information: 1. The car fuel level sensor can float on the surface of the fuel layer. Using the lever principle, the other end of the float is connected to a potentiometer. The amount of fuel determines the height of the float, and the potentiometer at the other end will reach different potentials based on the fuel level, which is then displayed on the dashboard. 2. The principle of the car fuel level sensor is based on a wire-wound resistor. The resistivity is determined by the material of the resistance wire, and the resistance value is determined by the material's resistivity and the number of coil turns.

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