Exhaust Front Pipe Replacement LTD/U20XE, LE5/U24XE

Warning: Refer to Exhaust Service Warning in the Preface section.

Warning: Refer to Protective Goggles and Glove Warning in the Preface section.

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.



2. Install the shipping fastening (1) to the flex pipe.

Note: To prevent internal damage to the flexible coupling of the catalytic converter assembly, the converter must be supported. The vertical movement at the rear of the catalytic converter assembly must not exceed 6 degrees up or down.

Note: The fastening clips of the exhaust system should be replaced every time that they are loosened. When replacing the exhaust system, the shipping fastening should only be removed after installation and before starting the engine. The shipping fastening should be removed for other operations in which the exhaust system has to be removed, stored and used to secure the flex pipe.

3. See assembly instruction (1) on the shipping fastening.



4. Disconnect the electrical connector from the heated oxygen sensor 2 (1).

•	Vehicles equipped with LTD / U20XE. Refer to Heated Oxygen Sensor 2 Replacement.

•	Vehicles equipped with LE5 / U24XE. Refer to Heated Oxygen Sensor 2 Replacement.

5. Remove the exhaust front pipe from the catalytic converter.



6. Remove the three nuts (1) from the exhaust front pipe.



7. Remove the exhaust front pipe (1) to muffler assembly nuts (2).



8. Remove the floor panel tunnel brace bolts.
9. Move the muffler assembly rearward in order to disengage the exhaust front pipe.
10. Discard both gaskets.
11. Remove the heated oxygen sensor 2 of the catalytic converter monitoring device.

•	Vehicles equipped with LTD / U20XE. Refer to Heated Oxygen Sensor 2 Replacement.

•	Vehicles equipped with LE5 / U24XE. Refer to Heated Oxygen Sensor 2 Replacement.

Caution: Refer to Fastener Caution in the Preface section.

1. Install the heated oxygen sensor 2 of the catalytic converter monitoring device.

•	Vehicles equipped with LTD / U20XE. Refer to Heated Oxygen Sensor 2 Replacement.

•	Vehicles equipped with LE5 / U24XE. Refer to Heated Oxygen Sensor 2 Replacement.

2. Install new gaskets to the exhaust front pipe and to the muffler assembly.
3. Move the muffler assembly rearward in order to install the exhaust front pipe between the catalytic converter and the muffler assembly.
4. Install the exhaust front pipe to the vehicle.



5. Install the floor panel tunnel brace bolts.

Tighten
25 N·m (18 lb ft).

6. Install the exhaust front pipe to the catalytic converter.



7. Install the three nuts (1) to the exhaust front pipe.



8. Install the exhaust front pipe to the muffler assembly nuts (1).

Tighten
25 N·m (18 lb ft).




9. Remove the shipping fastening (1) from the flex pipe.



10. Connect the electrical connector to the heated oxygen sensor 2 (1).

•	Vehicles equipped with LTD / U20XE. Refer to Heated Oxygen Sensor 2 Replacement.

•	Vehicles equipped with LE5 / U24XE. Refer to Heated Oxygen Sensor 2 Replacement.

11. Lower the vehicle.