Ranger 4WD V6-3.0L VIN U (1997)
Oxygen Sensor: Service and Repair
Heated Oxygen Sensor (HO2S)
Removal
SPECIAL SERVICE TOOL(S) REQUIRED:
Oxygen Sensor Wrench T94P-9472-A
1. NOTE: If excessive force is needed to remove heated oxygen sensor (HO2S), lubricate heated oxygen sensor with Ford Penetrating Lubricant
E8AZ-19A501-B or equivalent prior to removal.
Disconnect battery ground cable.
2. Disconnect heated oxygen sensor from engine control sensor extension wiring.
3. Raise and support vehicle.
4. Remove heated oxygen sensors from exhaust manifold, inlet pipe, or dual converter Y pipe, using Oxygen Sensor Wrench T94P-9472-A.
Installation
1. Apply a light coat of anti-seize compound F6AZ-9L494-AA install and tighten heated oxygen sensors to 36-46 Nm (27-33 lb-ft).
2. NOTE: When battery voltage is removed from the Powertrain Control Module (PCM), all learned values will be cleared and reset to
predetermined values. When battery voltage is restored to the PCM, the vehicle may exhibit certain driveability concerns. It will be necessary to
drive the vehicle to allow the PCM to relearn values for optimum driveability and performance.
3. Connect battery ground cable.
