Montana SV6 (2006), Relay, Terraza, Uplander (2005-2007)

Exhaust Manifold

Print

Removal & Installation



3.5L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the negative battery cable.
  4.  
  5. Remove the spark plug wires.
  6.  
  7. Remove the spark plugs.
  8.  
  9. For right side exhaust manifold, remove the following:

    EGR pipe from the exhaust manifold
     
    Heated oxygen sensor
     

  10.  
  11. Remove the exhaust manifold heat shield bolts.
  12.  
  13. Remove the exhaust manifold heat shields.
  14.  
  15. Remove the exhaust manifold nuts.
  16.  
  17. Remove the exhaust manifold and gasket.

    Click image to see an enlarged view

    Fig. Showing the RH exhaust manifold mounting position-3.5L engine



    Click image to see an enlarged view

    Fig. Showing the LH exhaust manifold mounting position-3.5L engine

  18.  

To install:

  1. Install the exhaust manifold studs. Tighten the exhaust manifold studs to 13 ft. lbs. (18 Nm).
  2.  
  3. Install the exhaust manifold gasket.
  4.  
  5. Install the exhaust manifold.
  6.  
  7. Install the exhaust manifold nuts. Tighten the exhaust manifold nuts working from the center out to 12 ft. lbs. (16 Nm).
  8.  
  9. Install the right side spark plugs. Tighten the spark plugs to 11 ft. lbs. (15 Nm).
  10.  
  11. Install the spark plug wires onto the spark plugs.
  12.  
  13. Install the lower exhaust manifold heat shield.
  14.  
  15. Install the upper exhaust manifold heat shield.
  16.  
  17. Install the exhaust manifold heat shield bolts. Tighten the exhaust manifold heat shield bolts to 89 inch lbs. (10 Nm).
  18.  
  19. For right exhaust manifold, coat the threads of the heated oxygen sensor with anti-seize compound.
  20.  
  21. Install the heated oxygen sensor. Tighten the heated oxygen sensor to 31 ft. lbs. (42 Nm).
  22.  
  23. Install the spark plug wires.
  24.  
  25. Reconnect the negative battery cable.
  26.  

3.9L Engine
Left Side
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove the air intake assembly.
  6.  
  7. Remove the upper radiator hose.
  8.  
  9. Disconnect the heater hoses from the heater pipes.
  10.  
  11. Remove the nuts that hold the heater pipes to the throttle body and position the heater pipes aside.
  12.  
  13. Remove the exhaust crossover heat shield.

    Click image to see an enlarged view

    Fig. Remove the heat shield bolts (1) and remove the exhaust crossover heat shield (2)-3.9L engine

  14.  
  15. Remove the exhaust crossover pipe nuts and remove the crossover pipe.

    Click image to see an enlarged view

    Fig. Remove the mounting nuts (1) to remove the exhaust crossover pipe (2)-3.9L engine

  16.  
  17. Remove the exhaust manifold heat shield.
  18.  
  19. Remove the exhaust manifold mounting bolts.
  20.  
  21. Remove the exhaust manifold and gasket.
  22.  

To install:

  1. Position a new exhaust manifold gasket on the cylinder head and install the exhaust manifold.
  2.  
  3. Install the exhaust manifold bolts and tighten to 15 ft. lbs. (20 Nm).
  4.  
  5. Install the exhaust manifold heat shield. Tighten the bolts to 89 inch lbs. (10 Nm).
  6.  
  7. Install the exhaust crossover pipe and tighten the nuts to 15 ft. lbs. (20 Nm).
  8.  
  9. Position the heater pipes back to their original position and connect the heater hoses.
  10.  
  11. Install the nuts holding the heater pipes to the throttle body.
  12.  
  13. Install the exhaust crossover heat shield and tighten the bolts to 89 inch lbs. (10 Nm).
  14.  
  15. Install the upper radiator hose.
  16.  
  17. Install the air intake assembly.
  18.  
  19. Connect the negative battery cable.
  20.  

Right Side
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove the air intake assembly.
  6.  
  7. Remove the alternator.
  8.  
  9. Remove the ignition coil.
  10.  
  11. Disconnect the engine wiring harness connector from the heated oxygen sensor (HO2S).
  12.  
  13. Remove the HO2S.
  14.  
  15. Remove the nuts that hold the heater pipes to the throttle body and position the heater pipes aside.
  16.  
  17. Remove the exhaust crossover heat shield.
  18.  
  19. Remove the exhaust crossover pipe nuts and remove the crossover pipe.
  20.  
  21. Remove the catalytic converter.
  22.  
  23. Remove the exhaust manifold heat shield.
  24.  
  25. Remove the exhaust manifold mounting bolts.
  26.  
  27. Remove the exhaust manifold and gasket.
  28.  

To install:

  1. Position a new exhaust manifold gasket on the cylinder head and install the exhaust manifold.
  2.  
  3. Install the exhaust manifold bolts and tighten to 15 ft. lbs. (20 Nm).
  4.  
  5. Install the exhaust manifold heat shield. Tighten the bolts to 89 inch lbs. (10 Nm).
  6.  
  7. Install the catalytic converter.
  8.  
  9. Install the exhaust crossover pipe and tighten the nuts to 15 ft. lbs. (20 Nm).
  10.  
  11. Install the exhaust crossover heat shield and tighten the bolts to 89 inch lbs. (10 Nm).
  12.  
  13. Position the heater pipes back to their original position and connect the heater hoses.
  14.  
  15. Install the nuts holding the heater pipes to the throttle body.
  16.  
  17. Install the HO2S and tighten to 31 ft. lbs. (42 Nm). Connect the HO2S electrical connector.
  18.  
  19. Install the ignition coil.
  20.  
  21. Install the alternator.
  22.  
  23. Install the air intake assembly.
  24.  
  25. Connect the negative battery.
  26.  

 
label.common.footer.alt.autozoneLogo