View Here : Throttle Position Sensor
A throttle position sensor (TPS) is a sensor used to monitor the air intake of a engine. The sensor is usually located on the butterfly spindle/shaft so that it can directly monitor the position of the throttle. More advanced forms of the sensor are also used, for example an extra closed throttle position sensor (CTPS) may be employed to indicate that the throttle is completely closed.
What is the Throttle Position Sensor all about? For a car to run smoothly, it needs the proper mixture of air and fuel. The amount of air in the engine is controlled by the air intake system.
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If you've recently been having any stalling or acceleration problems with your vehicle, you may have a faulty throttle position sensor on your hands. In your vehicle, the throttle position sensor reads the position of the gas pedal and reports it to the engine control unit.
The throttle position sensor (TPS) is part of your vehicle's fuel management system and helps ensure that the correct mixture of air and fuel is delivered to your engine.
<DOHC> Checking the TPS and Adjusting the Idle <DOHC> TPS Testing and Adjustment. The TPS is there to tell the ECU how hard you have your foot on the gas.
How a Throttle Position Sensor Works. Every vehicle with an internal combustion engine has something called a throttle body, also referred to as a butterfly valve.
Throttle position sensor repair advice. A throttle position sensor is not a maintenance item and doesn’t have a specific service interval. The average lifespan of a throttle position sensor is just over 80,000 miles, though some will last for the lifetime of the car.
The Toyota 22R-E (and R-EC) engines use a "Linear" throttle position sensor. The sensor basically looks at idle or closed throttle (IDL) and throttle angle opening (VTA).
The function of the throttle position sensor is to supply information to the car's computer about the position of the car's throttle. It contains electro-mechanical parts, which are prone to weathering.