Mustang V8-4.6L DOHC VIN R (2003)
Oxygen Sensor: Service and Repair
Catalyst Monitor Sensor
EGO Sensor Wrench
SPECIAL TOOL(S)
REMOVAL
1. Disconnect the battery ground cable.
2. Raise and support the vehicle.
3. Disconnect the connector.
NOTE: Two catalyst monitor sensors are used for the engine control system. They are located in the dual converter Y pipe downstream from the
catalyst. The left side catalyst monitor sensor is shown, the right side is similar.
4. Using the special tool, remove the catalyst monitor sensors from the dual converter Y pipe.
NOTE: If necessary, lubricate the sensors with penetrating and lock lubricant to assist in removal.
INSTALLATION