Removal and Replacement

Exhaust Manifold









Removal

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

2. Remove the exhaust flexible pipe. For additional information, refer to Exhaust System &/or Catalytic Converter.

3. Disconnect the Heated Oxygen Sensor (HO2S) electrical connector.

4. Remove the 4 exhaust manifold heat shield bolts and the heat shield.

5. If equipped, detach the block heater wire harness retainer from the exhaust manifold stud.

6. Remove and discard the 7 exhaust manifold nuts.

7. Remove the exhaust manifold and discard the exhaust manifold gasket.

8. Remove and discard the 7 cylinder head studs.

9. Clean and inspect the exhaust manifold. For additional information, refer to Engine.

Installation

1. Install the 7 new cylinder head studs.
- Tighten to 17 Nm (150 lb-in).

2. NOTICE: Failure to tighten the catalytic converter nuts to specification before installing the converter bracket bolts will cause the converter to develop an exhaust leak.

NOTICE: Failure to tighten the catalytic converter nuts to specification a second time will cause the converter to develop an exhaust leak.

Install a new exhaust manifold gasket, the exhaust manifold and 7 new nuts in the sequence shown in 2 stages:

- Stage 1: Tighten to 48 Nm (35 lb-ft).

- Stage 2: Tighten to 48 Nm (35 lb-ft).





3. If equipped, attach the block heater wire harness retainer to the exhaust manifold stud.

4. Install the exhaust manifold heat shield and the 4 bolts.
- Tighten to 10 Nm (89 lb-in).

5. Connect the HO2S electrical connector.

6. Install the exhaust flexible pipe. For additional information, refer to Exhaust System &/or Catalytic Converter.