Throttle Position Sensor (TPS) – Functions And Location In The Engine

Do you ever wonder how your car knows exactly how much gas to give it when you press down on the accelerator pedal? It’s all thanks to the throttle position sensor in your car’s engine. From controlling the engine speed to providing feedback to the computer, the TPS throttle position sensor is a critical component in the overall operation of your vehicle.

Read on to learn more about how this sensor works and its location in the engine.

What is TPS, and How does it work?

Throttle Position Sensor is a sensor found in a car’s engine that measures the position of the throttle valve. Its primary purpose is to provide feedback to the car’s Electronic Control Unit (ECU) about how much the throttle valve is open.

When the driver presses the accelerator pedal, it opens the throttle valve, allowing more airflow into the engine. The TPS measures the angle of the throttle valve and sends this information to the ECU.

The ECU then uses this data to calculate the correct amount of fuel to be injected into the engine, ensuring the engine receives the right air-fuel mixture for optimal performance.

Where is the TPS located in the car?


The location of the TPS (Throttle Position Sensor) varies depending on the make and model of the car. Typically, it is located on the throttle body, which is found near the engine’s air intake.

Functions of the throttle position sensor

  • Monitor Fuel Efficiency: The TPS monitors the fueling rate of the engine and adjusts it accordingly, thus optimizing fuel efficiency.
  • Improve Engine Performance: By measuring the air/fuel mixture, the TPS helps the engine control unit produce a perfect fuel/air mix for improved engine performance.
  • Precise Accelerator Control: The TPS sends signals to the ECU in response to the accelerator position, helping it adjust the fuel supply precisely.
  • Prevent Engine Damage: The TPS helps prevent engine damage by ensuring the engine receives the correct amount of air and fuel.
  • Adjust Cruise Control: The TPS helps adjust the throttle position when cruise control is engaged on the vehicles.

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