Trooper LS 2WD V6-3.5L (2001)
5. Bank 2 sensor 1 is mounted on the exhaust pipe ahead of the left-hand catalytic converter.
6. Bank 2 sensor 2 is mounted behind the left-hand catalytic converter.
7. Disconnect the pigtail from the wiring harness.
IMPORTANT: The pigtail is permanently attached to the sensor. Be careful not to pull the wires out.
NOTE: Do not use a torch to remove an HO2S unless the sensor is being replaced. Using a torch could damage the sensor.
8. Remove the sensor from the exhaust pipe.
Because of the expansion and contraction of the metal in the exhaust system overtime, this may be difficult if the engine temperature is below 48 °
C (120 °F).
INSTALLATION PROCEDURE
IMPORTANT:
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A special anti-seize compound 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.
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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.
