Catalytic Converter: Service and Repair

Dual Converter Y-Pipe

Removal and Installation
All vehicles
1. Prepare the vehicle for dual converter Y-Pipe removal.
1. Raise and support the vehicle.
2. Remove the muffler and tail pipe assembly.





2. Disconnect the two heated oxygen sensor (H02S) electrical connectors.





3. Disconnect the two catalyst monitor sensor electrical connectors.





4. Remove the nuts.





Vehicles equipped with transfer case skid plate
5. Remove the bolts, and the transfer case skid plate.





All vehicles
6. Remove the two bolts retaining the heat shield to the transmission support crossmember bolts.
7. Using a suitable High-Lift jack, support the transmission.





8. Remove the nuts.





9. Remove the bolts, the nuts, and the transmission support crossmember.





Vehicles with 4.6L engine
10. Remove the nut.





Vehicles with 5.4L engine
11. Remove the bolt.





All vehicles
12. Remove the clamp.

13. NOTE: It may be necessary to heat the dual converter Y-pipe joint to ease removal.

Remove the dual converter Y-pipe.
14. To install, reverse the removal procedure.