Hombre XS Space Cab L4-2.2L CPC (1997)
Oxygen Sensor: Service and Repair
HO2S Replacement
Removal Procedure
NOTICE: The Heated Oxygen Sensor (HO2S) and the Oxygen Sensor use a permanently attached pigtail and connector. Do not remove this pigtail
from the Heated Oxygen Sensor. Damage or the removal of the pigtail or the connector could affect the proper operation of the sensor.
Take care when handling the HO2S and the O2S. Keep the in-line electrical connector and the louvered end free of grease, dirt, or other
contaminants. Also avoid using cleaning solvents of any type. Do not drop the HO2S or the O2S. Do not roughly handle the HO2S or the O2S.
When the engine temperature is below 45°C (120°F), the Heated Oxygen Sensor (HO2S) may be difficult to remove. Excessive force may
damage the threads in the exhaust manifold or the exhaust pipe.
1. Turn OFF the ignition.
2. Remove the electrical connector.
NOTICE: The use of excessive force may damage the threads in the exhaust pipe.
3. Carefully remove the rear heated oxygen sensor.
Installation Procedure
Important: A special anti-seize compound is used on the Heated Oxygen Sensor (HO2S) threads. The compound consists of liquid graphite and glass
beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already
have the compound applied to the threads. If the sensor is removed from an engine and if for any reason it is to be reinstalled, the threads must have
anti-seize compound applied before the reinstallation.
1. Coat the threads of the heated oxygen sensor with anti-seize compound if necessary.
2. Install the sensor.
Tighten
Tighten the sensor to 41 N.m (30 lb ft).
NOTICE: Refer to Fastener Notice in Cautions and Notices.
3. Install the HO2S 2 electrical connector.
