Exhaust Y-Pipe

Exhaust Y-Pipe - Gasoline Engines

Removal

NOTE: Exhaust fasteners are of a torque prevailing design. Use only new fasteners with the same part number as the original. Torque values must be used as specified during reassembly to make sure of correct retention of exhaust components.

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Jacking and Lifting Service and Repair.

2. Disconnect the 2 Heated Oxygen Sensor (HO2S) electrical connectors.

3. Disconnect the Catalyst Monitor Sensor (CMS) electrical connector.

4. Remove the 2 exhaust Y-pipe-to-catalytic converter bolts.

5. NOTE: LH exhaust Y-pipe-to-exhaust manifold nuts shown, RH similar.

With the help of an assistant, remove the 4 exhaust Y-pipe-to-exhaust manifold nuts and the exhaust Y-pipe assembly from the vehicle.

- Discard the nuts.





Installation

NOTE: Do not tighten any fasteners until all components are aligned.

1. NOTICE: Prior to installation, inspect the Heated Oxygen Sensor (HO2S) and the Catalyst Monitor Sensor (CMS) wiring harness for damage.

NOTE: LH exhaust Y-pipe-to-exhaust manifold shown, RH similar.

With the help of an assistant, position the exhaust Y-pipe into the vehicle and loosely install 4 new exhaust Y-pipe-to-exhaust manifold nuts.





2. Loosely install the 2 exhaust Y-pipe-to-catalytic converter bolts.

3. NOTE: Make sure the exhaust Y-pipe is aligned to provide maximum clearance to adjacent parts.

To seat the LH exhaust Y-pipe-to-exhaust manifold nuts, tighten the nuts in the following sequence.

- Tighten the lower LH exhaust Y-pipe-to-exhaust manifold nut to 20 Nm (177 lb-in).

- Tighten the upper LH exhaust Y-pipe-to-exhaust manifold nut to 40 Nm (30 lb-ft).

- Tighten the lower LH exhaust Y-pipe-to-exhaust manifold nut to 40 Nm (30 lb-ft).





4. NOTE: Make sure the exhaust Y-pipe is aligned to provide maximum clearance to adjacent parts.

To seat the RH exhaust Y-pipe-to-exhaust manifold nuts, tighten the nuts in the following sequence.

- Tighten the lower RH exhaust Y-pipe-to-exhaust manifold nut to 20 Nm (177 lb-in).

- Tighten the upper RH exhaust Y-pipe-to-exhaust manifold nut to 40 Nm (30 lb-ft).

- Tighten the lower RH exhaust Y-pipe-to-exhaust manifold nut to 40 Nm (30 lb-ft).





5. Tighten the 2 exhaust Y-pipe-to-catalytic converter bolts.
- Tighten to 40 Nm (30 lb-ft).

6. Connect the CMS electrical connector.

7. Connect the 2 HO2S electrical connectors.