Mopar 56029085AA Oxygen Sensor

The pigtail and electrical connector of the sensor are permanently attached and cannot be removed without damaging the sensor. It is important to keep grease, dirt, and other contaminants away from the electrical connector and the louvered end of the sensor. Cleaning solvents should not be used on the sensor. Rough handling or dropping of the sensor should be avoided.

The upstream oxygen sensor is located on top of the exhaust manifold for 2.4L four-cylinder engines and on top of the rear exhaust manifold for 3.3L/3.8L V6 engines. The electrical lead should be traced and disconnected from the upstream oxygen sensor, and then the sensor can be unscrewed using a special oxygen sensor socket. After removing the old sensor, the threads of the sensor bore in the exhaust manifold should be cleaned. If reusing the old sensor, anti-seize compound should be applied to the threads for future removal. If installing a new sensor, anti-seize compound is not necessary as the threads already have it. The upstream oxygen sensor should be installed and tightened securely.

To replace the camshaft reference sensor, first unplug the sensor lead at the electrical connector and loosen the retaining bolt. Remove the sensor from the cylinder head. If reinstalling the same sensor, remove the old spacer, clean the sensor face, and install a new spacer. Inspect the O-ring. For a new sensor, ensure a new paper spacer is already installed, and the O-ring is properly positioned. Apply oil to the O-ring before installation, push the sensor down to contact the cam timing gear, and tighten the retaining bolt.

To remove the emission maintenance timer, unplug the electrical connector, remove the screws, and lower the timer from the instrument panel. Installation is the reverse of removal.