For 1990-2009 cars

### 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.

Important: Refer to Engine Controls for oxygen sensor replacement.

1. Remove the bolts that retain the heat shield to the vehicle.
2. Remove the oxygen sensor connector from the shield.
3. Remove the heat shield.

### Installation Procedure

1. Install the oxygen sensor connector to the shield.
2. Install the bolts that retain the heat shield to the vehicle.