Catalytic Converter: Service and Repair

Three Way Catalytic Converter (TWC)

Removal and Installation
1. Raise and support the vehicle.





2. Disconnect the two H02S connectors.





3. Disconnect the two catalyst monitor connectors.





4. Remove the four nuts.





5. Remove the nuts and the three way catalytic converter.
6. Transfer the two HO2S sensors and the two catalyst monitors if a new TWC is being installed.
- Apply High Temperature Nickel Anti-Seize Lubricant F6AZ-9L494-AA or equivalent meeting Ford specification ESE-M12A4-A to the HO2S sensor and catalyst monitor threads.
7. To install, reverse the removal procedure.