Friday, December 6, 2013
How to Replace the Oxygen Sensor on a Trooper
When your Isuzu Trooper begins burning more gas than normal or running rough, you may have a failing oxygen sensor. When an oxygen sensor begins to fail, it does not report the oxygen concentration of the exhaust properly and causes the vehicle to burn too much fuel. When an oxygen sensor begins to fail, the check engine light of your Trooper may illuminate as well. Buy replacement sensors at an auto parts store or Isuzu dealership.
Instructions
- 1
Raise your Isuzu Troopers front end using a jack. Position the truck on a set of jack stands.
2Locate the two oxygen sensors along the exhaust pipe path. The oxygen sensors will be located before and after the catalytic converter and will protrude from the exhaust pipes.
3Disconnect the wiring pigtail from the sensor. Isuzu uses a full pigtail on the Trooper, so you will need to follow the wiring down to the connection to pull them apart.
4Remove the sensor from the exhaust pipe using an oxygen sensor socket and ratchet. Insert the new sensor carefully, threading it by hand to start. Tighten it with the oxygen sensor and ratchet.
5Connect the wiring pigtail to the plug. Repeat the process on the other oxygen sensor. Raise the front of the truck and remove the jack stands. Lower the truck to the ground.
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