F 150 2WD Pickup V6-4.2L VIN 2 (1997)
Oxygen Sensor: Service and Repair
Downstream Heated Oxygen Sensor
REMOVAL
WARNING:
-
The normal operating temperature of the exhaust system is very high. Never attempt to service any part of the system until it has cooled. Be
especially careful when working around the three way catalytic converter. The temperature of the three way catalytic converter rises to a high level
after only a few minutes of engine operation.
-
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 tuning 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.
1. Turn the ignition key off.
2. Raise and support the vehicle.
3. Remove the Catalyst Monitor Sensor (CMS).
1
Disconnect the electrical connector.
2
Use Oxygen Sensor Wrench to remove the CMS.
INSTALLATION
To install, reverse the removal procedure.
