The throttle position sensor is a contrivance that transmits information about the position of the throttle body to the vehicle’s engine control unit. With gradual use, it becomes worn and needs replacement. Once it goes bad, it sends wrong data to the vehicle’s computer and results in poor fuel economy. Thus, it is imperative for a motorist to be aware of the signs of a faulty throttle position sensor so that the motorist can replace the sensor before its failure causing irreversible damage to the engine.