Removal and Installation

WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

With 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 (CMS) electrical connector.

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

Using the special tool, remove the CMS from the exhaust and discard.
- To install, tighten to 48 Nm (35 lb-ft).
  
  Fig 1: Removing CMS From Exhaust
  Courtesy of FORD MOTOR CO.

NOTE: Do not reuse CMS. If removed, a new sensor must be installed.

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