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audi q7 fuel level sensor
Over time, the two contacts of the audi q7 oil float and the surface of the white substrate resistor will form a thin film. In severe cases, it will corrode the guide band on the white substrate. There are many guide bands on the white substrate (most of them are more than 35). If one of them is broken, the oil gauge in your cab will indicate abnormal.
The audi q7 oil level gauge does not move, making it difficult for the owner to determine the remaining fuel level of the car. The malfunction of the oil gauge is usually not a major problem. The fault may be caused by the oil float (oil level sensor) and the dipstick tube. But these parts are mostly located inside the car, and simple solutions are almost impossible. If it's some vintage cars, it's likely to be oil slick, which is what we call the oil level sensor. Then we can check whether the plug of the oil level sensor on the fuel tank is loose or oxidized or burned; Observe whether the oil level sensor is stuck during the sliding process. If there is no problem with the oil level sensor, it is likely that there is a problem with the oil gauge line on the dashboard. At this point, the instrument panel should be removed and a multimeter and pin should be used to locate the circuit corresponding to the oil gauge on the instrument for testing.
The metal rod, also known as the oil level sensor, is connected to a floating ball in the fuel tank, which is similar to the principle of a toilet water tank in a toilet. The end of the metal rod connected to the floating ball will be connected to the variable resistor through a movable joint. The position of the floating ball on the fuel tank level changes, and it also changes its position on the variable resistor through a metal rod, which is connected to the car's fuel gauge. The action of the oil gauge pointer will be controlled by the current of the variable resistor. The oil gauge scale rises. This situation is reflected in the fact that the pointer of the fuel gauge remains at a certain position, and even after driving a certain distance, the scale display system will actually rise. The main reason for this situation is that the connecting rod between the oil level sensor and the float is stuck, preventing the float from floating up and down normally, causing the sensor to remain unchanged and the oil gauge pointer to be fixed in a certain position.
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