Wagoneer L6-242 4.0L VIN L FI (1989)
Following the above procedures will expedite the processing of your claim.
If you have any questions or need assistance in completing this action, please contact your Zone Service Office.
A. Oxygen Sensor Inspection
1.
Raise vehicle on a hoist and locate oxygen sensor in exhaust manifold as shown in Figure 1.
If the oxygen sensor has a metal stone shield around the sensor body continue with Step B.
If the sensor does not have a stone shield, a new sensor has already been installed. Lower vehicle and continue with Step C.
B. Replace Oxygen Sensor
WARNING:
Exhaust manifold becomes very hot during engine operation. Allow engine to cool before removing oxygen sensor.
1.
Disconnect the oxygen sensor electrical connector.
2.
Remove oxygen sensor using a crowfoot wrench.
3.
Clean exhaust manifold threads using a thread chaser.
NOTE:
Do not use solvents or lubricants on threads.
4.
Install oxygen sensor (PN C3905622). Tighten to 22 ft-lbs (30 Nm).
5.
Connect oxygen sensor connector.
6.
Lower vehicle.
C. Replace Crankcase Ventilation (CCV) Harness
