Removal and Installation

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

CAUTION: If equipped with fire suppression system, depower the system. For important safety warnings and procedures, refer to FIRE SUPPRESSION SYSTEM .

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 right side heated oxygen sensor (HO2S) electrical connector.

Fig 1: Disconnecting Right Side Heated Oxygen Sensor (HO2S) Electrical Connector
Courtesy of FORD MOTOR CO.
Disconnect the left side HO2S electrical connector.

Fig 2: Disconnecting Left Side HO2S Electrical Connector
Courtesy of FORD MOTOR CO.
Using the special tool, remove the RH or LH HO2S as necessary.
- To install, tighten to 41 Nm (30 lb-ft).
  
  Fig 3: Removing HO2S Electrical Connector As Necessary
  Courtesy of FORD MOTOR CO.

WARNING: If equipped with fire suppression system, repower the system. For important safety warnings and procedures, refer to FIRE SUPPRESSION SYSTEM .

To install, reverse the removal procedure. If equipped with fire suppression system, repower the system.

Apply a light coat of anti-seize lubricant to the threads of the HO2S.