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Home >> Chrysler >> 2012 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (3.6L Engine (Service Information)) >> Manifolds >> Manifold, Intake >> Removal >> Lower

Manifold, Intake: Removal: Lower

WARNING: This page is about a different variant/trim than selected.
Fig 1: Negative Battery Cable
GC0139402Courtesy of CHRYSLER GROUP, LLC
  1. Perform the fuel pressure release procedure. Refer to FUEL SYSTEM PRESSURE RELEASE .
  2. Disconnect and isolate the negative battery cable (1).
    Fig 2: Engine Cover
    GC0144028Courtesy of CHRYSLER GROUP, LLC
  3. Lift the engine cover retaining grommets off the ball studs and remove the engine cover (1).
    Fig 3: Inlet Air Temperature (IAT) Sensor Electrical Connector, Air Inlet Hose Assembly & Fasteners
    GC0144029Courtesy of CHRYSLER GROUP, LLC
  4. Disconnect the electrical connector (1) from the Inlet Air Temperature (IAT) sensor.
  5. Loosen the clamp (2) at the throttle body.
  6. Loosen the clamp (3) at the air cleaner housing.
  7. Lift the air inlet hose assembly retaining grommet off the ball stud (4).
  8. Remove the air inlet hose assembly (5).
    Fig 4: Upper Intake Manifold & Bolts
    GC0144183Courtesy of CHRYSLER GROUP, LLC
    WARNING:

    The fuel system is under constant pressure even with engine off. Before servicing the fuel rail, fuel system pressure must be released.

  9. Remove the upper intake manifold (2) and support brackets. Refer to MANIFOLD, INTAKE, REMOVAL .
    Fig 5: Intake Ports, Insulator & Alignment Posts
    GC0144184Courtesy of CHRYSLER GROUP, LLC
  10. Remove the insulator (2) from the left cylinder head cover.
    Fig 6: Fuel Supply Hose & Fuel Injector Electrical Connectors
    GC0144479Courtesy of CHRYSLER GROUP, LLC
  11. Disconnect the fuel supply hose (1) from the fuel rail. Refer to FITTING, QUICK CONNECT .
  12. Disconnect the fuel injector electrical connectors (2).
    Fig 7: Injection/Ignition Harness Retainer & Main Wire Harness Retainer
    GC0144480Courtesy of CHRYSLER GROUP, LLC
  13. Unfasten the injection/ignition harness retainer (1) from the rear of the lower intake manifold.
  14. Disengage the main wire harness retainer (2) form the rear of the lower intake manifold.
    Fig 8: Lower Intake Manifold & Attaching Bolts
    GC0144186Courtesy of CHRYSLER GROUP, LLC
  15. Remove the eight lower intake manifold attaching bolts (1).
  16. Remove the lower intake manifold (2) with the fuel injectors and fuel rail as an assembly.
    Fig 9: Lower Intake Manifold To Cylinder Head Seals
    GC0144265Courtesy of CHRYSLER GROUP, LLC
  17. Remove and discard the six lower intake manifold to cylinder head seals (1).
    Fig 10: Fuel Rail & Retaining Bolts
    GC0144187Courtesy of CHRYSLER GROUP, LLC
  18. If required, remove the fuel rail (2) and fuel injectors from the lower intake manifold. Refer to RAIL, FUEL, REMOVAL .
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