Removal and Installation

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to JACKING & LIFTING .
Disconnect the battery ground cable. For additional information, refer to BATTERY, MOUNTING AND CABLES .
Disconnect the catalyst monitor sensor electrical connector.

NOTE: If necessary, lubricate the sensor threads with penetrating and lock lubricant to assist in removal.

Using the special tool, remove the catalyst monitor sensor.
- To install, tighten to 48 Nm (35 lb-ft).
  
  Fig 1: Removing Catalyst Monitor Sensor Using Special Tool
  Courtesy of FORD MOTOR CO.

NOTE: Apply a light coat of anti-seize lubricant to the threads of the catalyst monitor sensor.

To install, reverse the removal procedure.