Catalyst Monitor Sensor

Catalyst Monitor Sensor - 4.6L (3V), 5.4L (4V)









NOTE: 4.6L (3V) shown, 5.4L (4V) similar.










Removal and Installation

1. With the vehicle in NEUTRAL, position it on a hoist.

2. Disconnect the Catalyst Monitor Sensor (CMS) electrical connector.

3. NOTE: If necessary, lubricate the CMS threads with penetrating and lock lubricant to aid in removal.

Using the Exhaust Gas Oxygen Sensor Socket, remove the CMS.
- Calculate the correct torque wrench setting for the following torque.

- To install, tighten to 48 Nm (35 lb-ft).





4. To install, reverse the removal procedure.
- Apply a light coat of anti-seize lubricant to the threads of the CMS before installing.