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Home >> Saturn >> 2005 >> Ion Red Line >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Introduction >> Repair Instructions >> Heated Oxygen Sensor Replacement - Position 2 >> Installation Procedure
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Installation Procedure

IMPORTANT: 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, Saturn P/N 24185279, or equivalent.
  2. Carefully install the HO2S to the pipe.
    3. NOTE: Refer to Component Fastener Tightening Notice in Cautions and Notices.
  3. Using the J 39194 , or equivalent, tighten the HO2S.

    Tighten:  Tighten the HO2S to 41 N.m (30 lb ft).

  4. Install the HO2S electrical harness into position as noted before removal.
    5. IMPORTANT: Use care when securing the HO2S electrical harness into the channel on the exhaust heat shield, to not pinch the wires.
  5. Carefully bend the edge of the channel (1) on the LH side of the exhaust heat shield inboard, just enough to secure the HO2S electrical harness in the channel.
    6. Fig 1: Locating HO2S Electrical Harness
    GM889722Courtesy of GENERAL MOTORS CORP.
  6. Connect the HO2S electrical connector (2).
    7. Fig 2: View Of HO2S & Electrical Connector
    GM1389438Courtesy of GENERAL MOTORS CORP.
  7. Install the wheel drive shaft heat shield. Refer to Wheel Drive Shaft Heat Shield Replacement in Engine Exhaust.
  8. Lower the vehicle.
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