Tools and Materials Needed:
- New oxygen sensor (check your owner's manual for the correct part number)
- Oxygen sensor socket (or a deep socket that fits the oxygen sensor)
- Ratchet or wrench
- Penetrating oil (optional, if the oxygen sensor is difficult to remove)
- Safety glasses
- Gloves
Instructions:
1. Park the vehicle on a level surface, turn off the engine, and allow it to cool down.
2. Engage the parking brake and chock the wheels to prevent the vehicle from rolling.
3. Locate the oxygen sensor. In the 1999 Dodge Intrepid, there are two oxygen sensors: one is located on the exhaust manifold near the front of the engine, and the other is located on the catalytic converter.
4. Once you have located the oxygen sensor, use a penetrating oil to loosen it up if it is corroded or stuck. Apply the penetrating oil around the base of the sensor and let it sit for a few minutes.
5. Use the oxygen sensor socket or deep socket to loosen and remove the oxygen sensor from its position. Turn it counterclockwise until it comes out. Be careful not to damage the threads of the sensor or the exhaust system.
6. Inspect the removed oxygen sensor for any damage, wear, or corrosion. Compare it with the new oxygen sensor to ensure they are the same type and size.
7. Apply anti-seize compound (optional but recommended) to the threads of the new oxygen sensor before installing it. This will help prevent it from becoming stuck in the future.
8. Thread the new oxygen sensor into the exhaust manifold or catalytic converter by hand until it is snug. Then use the socket to tighten it further, turning it clockwise until it is secure. Be careful not to overtighten the sensor.
9. Reconnect any electrical connectors that you may have disconnected during the process.
10. Start the vehicle and let it run for a few minutes to allow the oxygen sensor to heat up and start functioning.
11. Test the oxygen sensor to ensure it is working properly. You can do this by using a scan tool or observing the vehicle's fuel efficiency and performance.
12. If everything seems to be working correctly, turn off the engine and allow it to cool down. Then reconnect the negative battery cable.
Remember, if the oxygen sensor is difficult to reach or if you are not comfortable performing this task, it's best to have it done by a qualified mechanic to avoid any potential issues or safety risks.
