How to Replace Sequoia Oxygen Sensors

104 178

    Upstream oxygen sensor

    • 1). Turn on the car and run for one to two minutes to expand the exhaust pipes enough for easier removal of the sensor. Locate the upstream oxygen sensor on the front end of the exhaust pipe behind the manifold flange and near the catalyst. If the vehicle has a V8, the sensor will be located on the rear end of the manifold near the flange for the exhaust pipe.

    • 2). Unplug the electrical connector from the sensor. Remove the sensor mounting nuts with an appropriately sized wrench or ratchet. Finally, remove the sensor and gasket. Discard the sensor, gasket and nut.

    • 3). Apply anti-seize compound to the threads of the new sensor. Using the new gasket, replace the sensor being careful not to contaminate and damage the surface with dirt or grease. Tighten the sensor into place using the replacement nut.

    Downstream oxygen sensor

    • 1). Locate the downstream oxygen sensor behind the rear catalytic converter (for all 2001 and later model) or behind the single catalytic converter (for 2000 models) in the exhaust pipes. If the vehicle is equipped with a V8, the sensor will be upstream of the converter in each exhaust pipe.

    • 2). Unplug the electrical connector from the sensor. Remove the sensor mounting nuts with an appropriately sized wrench or ratchet. If the vehicle has a heat shield, remove it as well. Finally, remove the sensor and gasket. Discard the sensor, gasket and nut.

    • 3). Apply anti-seize compound to the threads of the new sensor. Using the new gasket, replace the sensor being careful not to contaminate and damage the surface with dirt or grease. Tighten the sensor into place using the replacement nut.

Subscribe to our newsletter
Sign up here to get the latest news, updates and special offers delivered directly to your inbox.
You can unsubscribe at any time
You might also like on "Cars & Vehicles"

Leave A Reply

Your email address will not be published.