TPS, also known as, throttle position sensor, is a system which is chiefly used in carburetor and fuel-injected engines. It is located at the butterfly spindle in the engine. In fact, the location of the TPS in every modern car today, is the same as the configuration of the jeep. The reason the sensor is situated in the internal combustion engine is so that it can supervise the position of the throttle in the jeep's engine.