Malibu V6-3.1L VIN J (2002)
Oxygen Sensor: Service and Repair
Heated Oxygen Sensor (HO2S) 1 Replacement
TOOLS REQUIRED
J 39194-B Oxygen Sensor Socket
REMOVAL PROCEDURE (HO2S1)
The heated oxygen sensor may be difficult to remove when engine temperature is below 48°C (120°F). Excessive force may damage threads in
exhaust manifold or exhaust pipe.
1. Disconnect the electrical connector.
2. Use the J 39194-B in order to carefully back out the heated oxygen sensor.
INSTALLATION PROCEDURE (HO2S1)
IMPORTANT: A special anti seize compound is used on the heated oxygen sensor threads. The compound consists of graphite suspended in fluid
and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New service sensors will already
have the compound applied to the threads. If a sensor is removed from an engine and if for any reason is to be reinstalled, the threads must have
anti-seize compound applied before reinstallation.
1. Coat the threads of heated oxygen sensor/catalyst monitor with anti seize compound P/N 5613695, or equivalent if necessary.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the heated oxygen sensor.
Tighten
Tighten the pre-catalytic converter HO2S 1 to 42 N.m (31 lb ft).
3. Connect the electrical connector.
