Friday, November 19, 2010

How to Replace an El Camino Oxygen Sensor

Things You'll Need:

  • Car lift 
  • Safety glasses 
  • Penetrating oil
  • Box-end hand wrench set 
  •  Screwdriver Replacement oxygen sensor 
  • Anti-seize compound
  1. Lift the El Camino onto a car lift and bring it up to a comfortable height to work at from underneath. Put on the safety glasses before getting under the vehicle.
  2. Locate the catalytic converter near the center of the El Camino's undercarriage and follow it to the front Y-pipe for the oxygen sensor.
  3. Follow the wire coming from the oxygen sensor to the nearby wire harness plug. Unplug the sensor wire from the harness plug.
  4. Spray the exposed threads of the sensor with a generous amount of penetrating oil.
  5. Place the wire through the closed end of a box-end wrench and place the wrench on the hexagon-shaped base of the sensor. Turn the sensor counterclockwise to unthread it from the exhaust pipe. Remove the oxygen sensor. If necessary, apply heat to the exhaust pipe area and expand the metal of the pipe to help remove the sensor.
  6. Apply a light amount of anti-seize compound on the threads of the replacement sensor. Do not let the compound come into contact with the sensor's head.
  7. Screw the sensor into the exhaust pipe's porthole by hand and then snug it tightly with the wrench.
  8. Plug the oxygen sensor wire back into the wire harness plug.



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