Removal & Installation (Tacoma, Tundra 3.4L & 4Runner)
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tundra, 2002 Toyota Tacoma, 2002 Toyota Sienna, 2002 Toyota Sequoia, and 2002 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
A heated oxygen sensor is used on exhaust pipe behind catalytic converter and a Air/Fuel (A/F) sensor is used on exhaust pipe in front of catalytic converter. For servicing of A/F sensor, see AIR/FUEL SENSOR under ENGINE SENSORS & SWITCHES. On Tacoma and Tundra, servicing of heated oxygen sensor is just primarily an unbolt and bolt-on procedure using NEW gasket and NEW retaining nuts for heated oxygen sensor. Tighten heated oxygen sensor-to-exhaust pipe retaining nuts to specification. See TORQUE SPECIFICATIONS . On 4Runner, heated oxygen sensor screws into the exhaust pipe. Tighten heated oxygen sensor to specification. See TORQUE SPECIFICATIONS .