Land Rover Range Rover Discovery Throttle Position Sensor 80481A 96 97 98 99 00 01 02 ERR4278

Range Rover Land Rover Discovery TPS Up for sale is a Good used, working Rover Throttle position switch.  Part numbers listed at top.  Here is some detailed data I was able to find about this unit from the internet! Throttle Position Sensor The Throttle Position Sensor is mounted on the side of the plenum chamber inlet neck and is directly coupled to the throttle valve shaft. The potentiometer is a resistive device supplied with a voltage from the ECU. Movement of the throttle pedal causes the throttle valve to open, thus rotating the wiper arm within the potentiometer which in turn varies the resistance in proportion to the valve position. The ECU lengthens the injector open time when it detects a change in output voltage (rising) from the potentiometer. In addition, the ECU will weaken the mixture when it detects the potentiometer output voltage is decreasing under deceleration and will shorten the length of time the injectors are open. When the throttle is fully open, the ECU wi