Town & Country V6-3.3L VIN R (2003)
Oxygen Sensor: Service and Repair
Upstream Sensor
REMOVAL - UPSTREAM 1/1
1. Remove battery, refer to the Battery section for more information.
2. Remove the battery tray, refer to the Battery section for more information.
3. Disconnect the speed control vacuum harness from servo.
4. Disconnect the electrical connector from servo.
5. Remove the speed control servo and bracket and reposition.
Fig. 23 O2 Sensor Upstream 1/1-3.3/3.8L
6. Use a socket such as the Snap-On YA8875 or equivalent to remove the sensor.
7. When the sensor is removed, the threads must be cleaned with an 18 mm X 1.5 + 6E tap. If using the original sensor, coat the threads with Loctite
771-64 anti-seize compound or equivalent.
INSTALLATION - UPSTREAM 1/1
The engines uses two heated oxygen sensors.
1. After removing the sensor, the exhaust manifold threads must be cleaned with an 18 mm X 1.5 + 6E tap. If reusing the original sensor, coat the
sensor threads with an anti-seize compound such as Loctite 771 - 64 or equivalent. New sensors have compound on the threads and do not require
an additional coating.
2. Install sensor and tighten to 27 Nm (20 ft. lbs.).
3. Connect the electrical connector for the O2 sensor and install onto bracket.
4. Connect the electrical connector for the speed control servo.
5. Install the speed control servo and bracket refer to the Speed Control Servo for more information.
6. Connect the speed control vacuum harness to servo.
7. Install the battery tray, refer to the Battery section for more information.
8. Install battery, refer to the Battery section for more information
