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Home >> Ford >> 1999 >> Expedition 4WD V8-5.4L SOHC VIN L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Oxygen Sensor >> Service and Repair
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Oxygen Sensor: Service and Repair

Oxygen Sensor Wrench:






SPECIAL SERVICE TOOLS

REMOVAL
1. Disconnect the battery ground cable.
2. Raise and support the vehicle.

WARNING: THE ELECTRICAL POWER TO THE AIR SUSPENSION SYSTEM MUST BE SHUT OFF PRIOR TO HOISTING, JACKING OR TOWING AN AIR SUSPENSION VEHICLE. THIS CAN BE ACCOMPLISHED BY TURNING OFF THE AIR SUSPENSION SWITCH LOCATED IN THE RH KICK PANEL AREA. FAILURE TO DO SO MAY RESULT IN UNEXPECTED INFLATION OR DEFLATION OF THE AIR SPRINGS WHICH MAY RESULT IN SHIFTING OF THE VEHICLE DURING THESE OPERATIONS.







3. Disconnect the electrical connector.







4. Use the special tool to remove the Heated Oxygen Sensor (HO2S).

INSTALLATION







1. To install, reverse the removal procedure.
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