Removal & Installation (4Runner 4.0L)
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2003 Toyota Tundra, 2003 Toyota Tacoma, 2003 Toyota Sienna, 2003 Toyota Sequoia, and 2003 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
- Two heated A/F sensors are used, one on each exhaust manifold in front of catalytic converter. Heated A/F sensor on passenger side may be referred to as bank No. 1 sensor No. 1. Heat A/F sensor on driver side may be referred to as bank No. 2 sensor No. 1.
- Disconnect electrical connector for each A/F sensor. Remove A/F sensor from exhaust manifold.
- To install, reverse removal procedure. Tighten A/F sensor to specification. See TORQUE SPECIFICATIONS .