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HO2S 1 Replacement






HEATED OXYGEN SENSOR REPLACEMENT PROCEDURE

NOTICE: Care should be used when removing the Heated Oxygen Sensor 1 (HO2S 1), as damage could occur to the HO2S 1 and its wires.

IMPORTANT: HO2S may be difficult to remove at temperatures below 48°C (120°F). Care should be used so as to not damage threads in exhaust manifold.

REMOVE OR DISCONNECT

WARNING: If exhaust manifold is hot, care should be exercised when removing HO2S as to not burn yourself on a hot radiator or exhaust manifold.

1. Negative (-) battery cable.
2. HO2S 1 electrical connector.
3. Three nuts and two bolts and heat shield from exhaust manifold.
4. HO2S 1 from exhaust manifold.

INSTALL OR CONNECT

IMPORTANT: The HO2S comes with anti-seize coating on the new sensor. Care should be used as to not remove any of this coating.

1. HO2S 1 to exhaust manifold. Tighten HO2S 1 to 40-46 Nm (29-34 lb. ft.).
2. Heat shield to exhaust manifold; secure with three nuts. Tighten Heat shield nuts to 15 Nm (11 lb. ft.).
3. HO2S 1 electrical connector.
4. Negative (-) battery cable. Tighten Negative (-) battery cable-to-negative (-) battery terminal retainer to 15 Nm (11 lb. ft.).