![]() Your throttle position sensor controls the amount of air that is allowed into the intake manifold. It then uses this information to communicate with the fuel management system, which regulates both air flow and fuel. It reads information from the pedal about how far you have pressed it. As you press the gas, the vehicle’s electronic control module (ECM) communicates with many different parts. Most vehicles today use electronic throttle control. In newer cars, however, technology has replaced the mechanical connector. The gas pedal had a cable that attached from the pedal to the throttle body. In older cars, this was a mechanical process. ![]() This allows more air into the engine, and the car’s computer knows that it should spray more fuel into the combustion chamber. When you press the gas pedal, the valve on the throttle body opens wider. To help understand what a TPS is, we first need to briefly discuss how your engine operates. ![]()
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