SLX V6-3.2L SOHC (1996)
HEATED OXYGEN SENSOR (HO2S)
Removal Procedure
1. Disconnect the negative battery cable.
2. Locate the four oxygen sensors.
^
Bank 1 sensor 1 is mounted on the exhaust pipe ahead of the right-hand catalytic converter.
^
Bank 1 sensor 2 (automatic transmission) is mounted behind the right-hand catalytic converter.
^
Bank 1 sensor 2 (manual transmission) (2) is mounted between the exhaust tee and the catalytic converter.
^
Bank 1 sensor 3 (manual transmission only) (4) is mounted behind the catalytic converter.
^
Bank 2 sensor 1 is mounted on the exhaust pipe ahead of the left-hand catalytic converter.
^
Bank 2 sensor 2 (automatic transmission only) is mounted behind the left-hand catalytic converter.
3. Disconnect the pigtail from the wiring harness.
Important: The pigtail is permanently attached to the sensor. Be careful not to pull the wires out.
Notice: Do not use a torch to remove an HO2S unless the sensor is being replaced. Using a torch could damage the sensor.
4. Remove the sensor from the exhaust pipe.
^
Because of the expansion and contraction of the metal in the exhaust system over time this may be difficult if the engine temperature is
below 48°C (120°F).
Inspection Procedure
All four sensors are identical. Inspect each in the same way.
1. Inspect the pigtail and the electrical connector for grease, dirt, corrosion, and bare wires or worn insulation.
2. Inspect the louvered end of the sensor for grease, dirt, or other contaminants.
Installation Procedure
Important:
^
A special anti-seize compound, P/N 5613695, is used on the HO2S threads. This compound consists of glass beads suspended in a liquid
graphite solution. The graphite burns away with engine heat, but the glass beads will remain, making the sensor easier to remove.
^
New or service sensors will already have the compound applied to the threads. If a sensor is removed and is to be reinstalled for any reason,
the threads must have anti-seize compound applied.
1. Apply anti-seize compound or the equivalent to the threads of the oxygen sensor, if necessary.
2. Install the oxygen sensor on the exhaust pipe in its original position.
