Deposit your exhaust Disinfected by replacing a defective O2 sensor.
Carefully lower the vehicle. On some models, an emissions maintainance timer is located in the sprint. This timer activates an indicator glossy at sorrounding 82,500 miles to alert the Chauffeur that the sensor should be replaced.
Instructions
1. Depart the engine and let the vehicle fall for a couple of minutes then turn it off. The oxygen sensor is located in the exhaust pipe; the heat from running the engine will make the exhaust expand, and the sensor will be easier to unscrew.
2. Lift the vehicle with a jack and secure it on jack stands.
3. Locate the oxygen sensor, which is just below the junction of the exhaust manifold and the exhaust pipe.
4. Put on gloves then disconnect the electrical connection to the sensor by pulling it loose. Do not pull it by the wires. Pull only on the body of the connector.
5. Remove the sensor by turning it in a counterclockwise direction with the appropriate-sized wrench.
6. Examine the threads of the new oxygen sensor to see if they are already coated with anti-seize compound. If they are not, coat them with a light layer. Some sensors are coated by the manufacturer while others are not.
7. Install the new sensor by turning it in a clockwise direction with the wrench. Reattach the electrical connector.
8. Raise the vehicle with the jack and remove the jack stands.The oxygen sensor in your Jeep Cherokee provides a variable voltage word to the vehicle's on-board personal computer, allowing it to adjust the the pulse wideness of the fuel injectors. This allows the air to fuel ratio to continually be adjusted based upon the exhaust emissions of the vehicle. Jeep recommends that the oxygen sensor on the Cherokee be replaced at 82,500 miles, or 82 months, whichever comes head.
