Oxygen Sensor: Service and Repair

REMOVAL SERVICE POINT
Step 1:HEATED OXYGEN SENSOR REMOVAL
The exhaust manifold threads must be cleaned with a 18 mm (0.7 in.) x 1.5 + 6E tap after the heated oxygen sensor has been removed.

INSTALLATION SERVICE POINT
Step 1:HEATED OXYGEN SENSOR INSTALLATION
If reusing the original sensor, coat the sensor threads with an antiseize compound such as Loctite 771-64 or equivalent. New sensors have compound on the threads and do not require an additional coating.

INSPECTION
Check for damage, cracking or deterioration. Replace if faulty.

CAUTION:
1. Stop the engine immediately if engine misfiring occurs, otherwise an abnormally hot exhaust system will damage the catalytic converter or other underbody parts.
2. Correct and repair the ignition or fuel system if there are malfunctions, otherwise engine misfiring may occur which will damage the catalytic converter.
3. Observe manufacturer's specifications when doing service work