Heated Oxygen Sensor (Ho2S): Removal
WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2000 Mercury Villager, 2000 Mercury Mountaineer, 2000 Lincoln Navigator, 2000 Ford Windstar, and 2000 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
Unplug electrical connector from HO2S. Sensor may be difficult to remove when engine temperature is less than 120°F (48°C). Carefully remove HO2S sensor from exhaust pipe.