Removal Procedure
Caution: Refer to Battery Disconnect Caution in the Preface section.
- Disconnect the negative battery cable.
- Disconnect the pre-converter oxygen sensor connector.
- Remove the exhaust manifold heat shield bolts.
- Remove the exhaust manifold heat shield.
- Remove the auxiliary catalytic converter nuts from the exhaust manifold.
- Remove the exhaust manifold retaining nuts in the sequence shown.
- Remove the exhaust manifold.
- Remove the exhaust manifold gasket.
Caution: Refer to Safety Glasses Caution in the Preface section.
- Clean the sealing surfaces of the exhaust manifold and the cylinder head.
Installation Procedure
- Install the exhaust manifold gasket.
- Install the exhaust manifold.
Notice: Refer to Fastener Notice in the Preface section.
- Install the exhaust manifold retaining nuts and tighten them in the sequence shown.
Tighten
Tighten the exhaust manifold retaining nuts 25 N·m (18 lb ft).
- Install the auxiliary catalytic converter nuts to the exhaust manifold.
Tighten
Tighten the auxiliary catalytic converter-to-exhaust manifold nuts to 40 N·m (30 lb ft).
- Install the exhaust manifold heat shield.
- Install the exhaust manifold heat shield bolts.
Tighten
Tighten the exhaust manifold heat shield bolts to 15 N·m (11 lb ft).
- Connect the pre-converter oxygen sensor connector.
- Connect the negative battery cable.