Diesel fuel system sensors are designed to detect the level of diesel fuel in the fuel tank. The sensors convert the estimated amount of fuel into an electrical signal that is then shared with the other sensors in the vehicle. The amount of diesel fuel in the system is usually measured by recording the height of the fuel inside the tank. Most sensors use an electronic gauge to send readings wirelessly to other parts of the engine.
Different types of sensors use different methods for recording the amount of fuel. Ultrasonic and radar sensors will bounce a sound or electromagnetic wave off the fuel and then record the amount of time it takes for the wave or sound to return. Other sensors are placed at the bottom of the fuel tank. They measure the amount of pressure on the fuel to see how much is left in the tank.
Knowing how much fuel is in the tank is important. The vehicle will display the amount of fuel in the tank on the dashboard, so you can refill your tank before you run out of fuel. If the sensor is off, you won’t have a realistic idea of how much fuel is in the tank, and you could easily run out at a moment’s notice.
Diesel fuel sensors are not to be confused with the fuel rail pressure sensor, which monitors the pressure of the fuel entering the combustion chamber. Diesel engines use highly pressurized fuel injection systems to generate power. If the pressure of the fuel is off, the vehicle may not burn through the fuel completely, leading to a sudden loss of power. The fuel injectors are controlled by the fuel injection control module (FICM).
The diesel fuel sensor is a simple device that helps you monitor the amount of fuel in your tank. Browse our selection of replacement sensors to find the right one for your make and model.
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