What is the throttle position sensor?

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A throttle position sensor does exactly what its name implies. It is responsible for monitoring the position of the throttle in an internal combustion engine. The information collected by the throttle position sensor is used to control a number of different activities in the vehicle.

Location

The throttle position sensor is usually located directly on top of the butterfly spindle so that it can directly monitor the position of the valve controlled by the throttle.

Structure

The sensor is usually a potentiometer and provides a level of resistance on the throttle valve dependent on the position of the valve.

Use

The information collected by the throttle position sensor is sent to the engine control unit that helps dictate the proper ignition and fuel injection timing needed for the vehicle to operate smoothly.

Why

If the throttle position sensor did not exist, a vehicle would be much more likely to stall regularly because it is not receiving the perfect balance of fuel injection and fuel ignition timing.

Magnets

Most modern throttle position sensors use a small magnetic field to monitor the position of the throttle valve.

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What is the throttle position sensor?

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