Nissan Pathfinder 1996-05

Exhaust Manifold

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Removal & Installation



3.3L & 3.5L Engines
  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the or disconnect the following:

    Negative battery cable
     
    Exhaust manifold heat shields
     
    Exhaust Gas Recirculation (EGR) tube
     
    Heated Oxygen (HO 2 S) sensor connectors
     
    Exhaust front pipes
     
    Exhaust manifolds with catalytic converters attached. Loosen the nuts in the reverse of the torque sequence.
     

  4.  

To install:

Click image to see an enlarged view

Fig. Exhaust manifold torque sequence-3.3L engine



Click image to see an enlarged view

Fig. Right exhaust manifold torque sequence-3.5L engine



Click image to see an enlarged view

Fig. Exhaust manifold torque sequence-3.5L engine

  1. Install or connect the following:

    Exhaust manifolds with catalytic converters attached. Tighten the nuts in sequence to 21-25 ft. lbs. (28-33 Nm).
     
    Exhaust front pipes. Tighten the bolts to 21-25 ft. lbs. (28-33 Nm).
     
    Heated Oxygen (HO 2 S) sensor connectors
     
    EGR tube. Tighten the flange fittings to 29-36 ft. lbs. (39-49 Nm).
     
    Exhaust manifold heat shields. Tighten the bolts to 84-96 inch lbs. (9-11 Nm)
     
    Negative battery cable
     

  2.  
  3. Start the engine and check for leaks.
  4.  

4.0L Engine
Left Side
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the or disconnect the following:

    Negative battery cable
     
    Engine undercover
     
    Heated Oxygen (HO 2 S) sensor connectors
     
    Center exhaust pipe
     
    Muffler
     
    Left front exhaust downpipe
     
    Exhaust manifold heat shield
     
    Air-fuel ratio sensor
     
    Catalytic converter
     

  4.  
  5. Loosen the manifold nuts in the reverse order of the installation sequence shown.
  6.  
  7. Remove the exhaust manifold with the gasket.
  8.  

To install:

  1. Install the manifold in direction as shown.

    Click image to see an enlarged view

    Fig. Gasket orientation-4.0L engine

  2.  
  3. Install the manifold and tighten the nuts in sequence to 11 ft. lbs. (15 Nm).

    Click image to see an enlarged view

    Fig. Exhaust manifold torque sequence-4.0L engine

  4.  
  5. The remainder of installation is the reverse order of removal.
  6.  

Right Side
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the engine assembly.
  4.  
  5. Loosen the manifold nuts in sequence as shown.
  6.  
  7. Remove the exhaust manifold with the gasket.
  8.  
  9. Installation is the reverse order of removal. Note the following:
    1. Install the gasket in the direction as shown.
    2.  
    3. Tighten the manifold nuts in sequence to 11 ft. lbs. (15 Nm).
    4.  

  10.  

 
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