Liberty, Wrangler 2006-2007

Combination Manifold

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Removal & Installation



4.0L Engine

NOTE
The intake and exhaust manifold is removed as an assembly.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the battery negative cable.
  4.  
  5. Remove air cleaner inlet hose from the resonator assembly.
  6.  
  7. Remove the air cleaner assembly.
  8.  
  9. Remove the throttle cable, vehicle speed control cable (if equipped) and the transmission line pressure cable.
  10.  
  11. Disconnect the following electrical connections and secure their harness out of the way:

    Throttle Position Sensor
     
    Idle Air Control Motor
     
    Coolant Temperature Sensor (at thermostat housing)
     
    Intake Air Temperature Sensor
     
    Oxygen Sensor
     
    Crank Position Sensor
     
    Six Fuel Injector Connectors
     
    Manifold Absolute Pressure (MAP) Sensor.
     

  12.  
  13. Disconnect HVAC, and Brake Booster vacuum supply hoses at the intake manifold.
  14.  
  15. Perform the fuel pressure release procedure.
  16.  
  17. Disconnect and remove the fuel system supply line from the fuel rail assembly.
  18.  
  19. Remove the accessory drive belt.
  20.  
  21. Remove the power steering pump from the intake manifold and set aside.
  22.  
  23. Raise the vehicle.
  24.  
  25. Disconnect the exhaust pipes from the engine exhaust manifolds.
  26.  
  27. Lower the vehicle.
  28.  
  29. Remove the intake manifold and