Exhaust Manifold

REMOVAL & INSTALLATION

2.5L Engine

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Subframe transverse section
   • Heated Oxygen (HO2S) sensor connectors
   • Exhaust front pipe
   • Exhaust Gas Recirculation (EGR) pipe
   • Exhaust manifolds

   To install:

   Fig. 1: Right exhaust manifold torque sequence–2.5L engine

   Fig. 2: Left exhaust manifold torque sequence–2.5L engine

3. Install or connect the following:
   • Exhaust manifolds. Tighten the nuts in sequence to 14 ft. lbs. (20 Nm).
   • EGR pipe
   • Exhaust front pipe
   • HO2S sensor connectors
   • Subframe transverse section. Tighten the bolts to 69–96 ft. lbs. (94–131 Nm).
   • Negative battery cable
4. Start the engine and check for leaks.

3.0L Engine

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Engine under cover
   • Heated Oxygen (HO2S) sensor connectors
   • Exhaust front pipe
   • Exhaust manifold heat shields
   • Cross over pipe
   • Exhaust manifolds

   To install:

   NOTE: Use new fasteners and gaskets for assembly.

3. Install or connect the following:
   • Exhaust manifolds. Tighten the fasteners to 16–20 ft. lbs. (22–28 Nm).
   • Cross over pipe. Tighten the bolts to 12–16 ft. lbs. (16–22 Nm).
   • Exhaust manifold heat shields. Tighten the bolts to 14–18 ft. lbs. (19–25 Nm).
   • Exhaust front pipe. Tighten the nuts to 28–38 ft. lbs. (38–51 Nm).
   • HO2S sensor connectors
   • Engine under cover
   • Negative battery cable
4. Start the engine and check for leaks.

   Fig. 3: Exploded view of the exhaust system — 3.0L engine