Removal and Installation

WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 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 REMOVAL AND INSTALLATION .
Disconnect the heated oxygen sensor (HO2S) electrical connector.

NOTE: If necessary, lubricate the HO2S with lock lubricant to aid in removal.

Fig 1: Identifying Special Tool

Courtesy of FORD MOTOR CO.

Remove the HO2S from the exhaust manifold using the special tool and discard.
- To install, tighten to 48 N.m (35 lb-ft).

NOTE: Do not reuse HO2S. 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 HO2S.