Oxygen Sensor: Service and Repair
Oxygen Sensor (O2S) RemovalTools Required
DW170-010 Oxygen Sensor Remover/Installer
Right-hand Side
1. Disconnect the negative battery cable.
CAUTION: The Oxygen Sensor (O2S) uses a permanently attached pigtail and connector. This pigtail should not be removed from the O2S. Damage or removal of the pigtail or the connector could affect proper operation of the O2S. Take care when handling the O2S. Do not drop or damage the O2S.
2. Disconnect the oxygen sensor wiring harness connector.
3. Remove the canister solenoid valve. Refer to Evaporative Emission Canister Purge Solenoid Removal.
4. Remove the EGR pipe. Refer to Exhaust EGR Pipe Removal.
5. Using the O2S remover DW170-010, remove the upper O2S.
CAUTION: The oxygen sensor may be difficult to remove when the engine temperature is below 48 degrees C (118 degrees F). Excessive force may damage the threads in the exhaust manifold.
6. Using the O2S remover DW170-010, remove the lower O2S.
CAUTION: The oxygen sensor may be difficult to remove when the engine temperature is below 48 degrees C (118 degrees F). Excessive force may damage the threads in the exhaust manifold.
Left-hand Side
1. Disconnect the negative battery cable.
CAUTION: The Oxygen Sensor (O2S) uses a permanently attached pigtail and connector. This pigtail should not be removed from the O2S. Damage or removal of the pigtail or the connector could affect proper operation of the O2S. Take care when handling the O2S. Do not drop or damage the O2S.
2. Disconnect the oxygen sensor wiring harness connector.
3. Remove the air cleaner assembly.
4. Remove the brake vacuum hose.
5. Remove the knock sensor bracket bolt and bracket.
6. Using the O2S remover DW170-010, remove the upper O2S.
CAUTION: The oxygen sensor may be difficult to remove when the engine temperature is below 48 degrees C (118 degrees F). Excessive force may damage the threads in the exhaust manifold.
7. Using the O2S remover DW170-010, remove the lower O2S.
CAUTION: The oxygen sensor may be difficult to remove when the engine temperature is below 48 degrees C (118 degrees F). Excessive force may damage the threads in the exhaust manifold.
Oxygen Sensor (O2S) Installation
Tools Required
DW170-010 Oxygen Sensor Remover/Installer
1. Installation should follow the removal procedure in the reverse order.
NOTE: A special anti-seize compound is used on the O2S threads. This compound consists of a liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or service sensors will already have the compound applied to the threads. If a sensor is removed from any engine and if for any reason it is to be reinstalled, the threads must have anti-seize compound applied before reinstallation.
2. Using the O2S remover DW170-010, install the upper and lower O2S.
Tighten:
Tighten the oxygen sensor to 34 - 44 N.m (25 - 32 lb-ft).