How to replace oxygen sencer for 2006 saturn ion

Installation Removal & Installation

1. Remove the heat shield.
   
2. Note the routing of the Heated Oxygen Sensor (HO2S) electrical harness.
   
3. Disconnect the HO2S electrical connector.
   
4. Using a suitable Oxygen sensor socket remove the sensor.
   

To install:

NOTE A special anti-seize compound is used on the HO2S threads. The compound consists of a liquid graphite and glass beads. The graphite will burn away but the glass beads will remain, making the sensor easier to remove. New or service sensors already have the compound applied to the threads. If the sensor is removed and is to be reinstalled, the threads must be coated with an anti-seize compound before reinstallation.

1. If reinstalling the old HO2S, coat the threads with anti-seize compound.
   
2. Carefully install the HO2S to the pipe. Tighten the sensor to 22 ft. lbs. (30 Nm) on the sensor located at exhaust manifold, or 30 ft. lbs. (41 Nm) for the rear oxygen sensor.
   
3. Attach the sensor electrical connections.