Removal and Installation

LH Heated Oxygen Sensor (HO2S) 

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to JACKING & LIFTING article.
2. Remove the 7 bolts (5 shown in illustration) and the LH splash shield.
   • To install, tighten to 10 Nm (89 lb-in).
     Fig 1: Identifying LH Splash Shield Bolts

     Courtesy of FORD MOTOR CO.
3. Disconnect the LH Heated Oxygen Sensor (HO2S) electrical connector.
NOTE: If necessary, lubricate the sensor threads with penetrating and lock lubricant to assist in removal.
4. Using the Exhaust Gas Oxygen Sensor Socket, remove the LH HO2S.
   • Calculate the correct torque wrench setting for the following torque. Refer to the Torque Wrench Adapter Formulas in the illustration.
     Fig 2: Identifying Torque Wrench Adapter Formulas

     Courtesy of FORD MOTOR CO.
   • To install, tighten to 48 Nm (35 lb-ft).
     Fig 3: Identifying Exhaust Gas Oxygen Sensor Socket

     Courtesy of FORD MOTOR CO.

   RH HO2S 

5. Disconnect the RH HO2S electrical connector.
NOTE: If necessary, lubricate the sensor threads with penetrating and lock lubricant to assist in removal.
6. Using the Exhaust Gas Oxygen Sensor Socket, remove the RH HO2S  .
   • Calculate the correct torque wrench setting for the following torque. Refer to the Torque Wrench Adapter Formulas in the illustration.
     Fig 4: Identifying Torque Wrench Adapter Formulas

     Courtesy of FORD MOTOR CO.
   • To install, tighten to 48 Nm (35 lb-ft).
     Fig 5: Identifying Exhaust Gas Oxygen Sensor Socket

     Courtesy of FORD MOTOR CO.

   All HO2S 

NOTE: Apply a light coat of anti-seize lubricant to the threads of the HO2S  .
7. To install, reverse the removal procedure.