TPS as a Variable Resistor

The throttle position sensor (TPS) is a tiny gadget on the carburetor throttle linkage or fuel injection body. It is actually a variable resistor that changes resistance as the throttle opens wider. The throttle opening is the one that informs the engine control computer in order to change air/ fuel mixture.

 

The TPS is designed to provide throttle angle input to the ECU on fuel-injected engines, thus contributing to vehicle’s efficiency, performance, and emission control. Aside from that, it also helps engine to maintain stable idle speed. Just like any other vehicle components, TPS should also be in good shape and working condition to avoid vehicle problems.

 

The TPS is another “behind the wheels” feature. Knowing it is another step in knowing your vehicle and its functions.