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Home >> Jeep >> 2007 >> Commander Base, 4.7 P, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (3.7L Engine (Service Information)) >> Removal >> 3.7L Engine

3.7L Engine

WARNING: This page is about a different variant/trim than selected.
Fig 1: Strut Tower Support
GC0027231Courtesy of CHRYSLER LLC
  1. Release fuel rail pressure then disconnect the fuel supply quick connect fitting at the fuel rail. Refer to STANDARD PROCEDURE and STANDARD PROCEDURE .
  2. Remove the strut tower support (1).
    Fig 2: Removing/Installing A/C Compressor
    GC0003787Courtesy of CHRYSLER LLC
  3. Disconnect the battery negative cable.
  4. Remove air cleaner assembly.
  5. Remove fan shroud with viscous fan assembly.
  6. Remove drive belt.
  7. Remove A/C compressor (2) and secure away from engine.
    Fig 3: Removing/Installing Generator
    GC0003785Courtesy of CHRYSLER LLC
  8. Remove generator (3) and secure away from engine.
    NOTE: Do NOT remove the phenolic pulley from the P/S pump. It is not required for P/S pump removal.
  9. Remove power steering pump with lines attached and secure away from engine.
  10. Drain cooling system.
  11. Disconnect the heater hoses from the engine.
  12. Disconnect heater hoses from heater core and remove hose assembly.
  13. Remove upper radiator hose from engine.
  14. Remove lower radiator hose from engine.
  15. Remove radiator/cooling module assembly.
  16. Disconnect the engine to body ground straps at the left side of cowl.
    Fig 4: Locating Throttle Body Connection Points
    GC0003789Courtesy of CHRYSLER LLC
    1 - THROTTLE BODY
    2 - TPS
    3 - IAC MOTOR
    4 - IAT SENSOR (THREADED TYPE)
    5 - MOUNTING SCREWS
  17. Disconnect the engine wiring harness at the following points:
    • Intake air temperature (IAT) sensor (4)
    • Fuel Injectors
    • Throttle Body (2)
    • Idle Air Control (IAC) Motor (3)
    • Engine Oil Pressure Switch
    • Engine Coolant Temperature (ECT) Sensor
    • Manifold Absolute Pressure MAP) Sensor
    • Camshaft Position (CMP) Sensor
    • Coil Over Plugs
    • Crankshaft Position Sensor
  18. Remove coil over plugs.
    Fig 5: Intake Manifold Bolt Tightening Sequence
    GC0003788Courtesy of CHRYSLER LLC
  19. Remove fuel rail and secure away from engine.
    NOTE: It is not necessary to release the quick connect fitting from the fuel supply line for engine removal.
  20. Remove the PCV hose.
  21. Remove the breather hoses.
  22. Remove the vacuum hose for the power brake booster.
  23. Disconnect knock sensors.
  24. Remove engine oil dipstick tube.
  25. Remove the intake manifold. See REMOVAL .
  26. Install Engine Lifting Fixture 8427 using original fasteners from the removed intake manifold, and fuel rail. Torque to factory specifications.
    NOTE: Recheck bolt torque on the Engine Lift Fixture before removing engine.
    Fig 6: Removing/Installing Starter
    GC0003784Courtesy of CHRYSLER LLC
  27. Disconnect oxygen sensor wiring.
  28. Disconnect crankshaft position sensor.
  29. Disconnect the engine block heater power cable, if equipped.
  30. Disconnect the front propshaft at the front differential and secure out of way.
    NOTE: It is necessary to disconnect the front propshaft for access to the starter and left side exhaust flange.
  31. Remove the starter (4).
    Fig 7: Locating Body Ground Strap-Right Side
    GC0003782Courtesy of CHRYSLER LLC
    Fig 8: Locating Body Ground Strap-Left Side
    GC0003783Courtesy of CHRYSLER LLC
  32. Remove the ground straps from the left (2) and right (3) side of the block.
    Fig 9: Removing/Installing Structural Cover
    GC0003786Courtesy of CHRYSLER LLC
  33. Remove the structural cover.
  34. Disconnect the right and left exhaust pipes at the manifolds and from the crossover, and remove from the vehicle.
    NOTE: The exhaust clamps at the manifolds cannot be reused. New clamps must be used or leaks may occur.
    Fig 10: Removing Torque Converter Bolts
    GC0011726Courtesy of CHRYSLER LLC
    1 - TRANSMISSION
    2 - DRIVEPLATE
    3 - TORQUE CONVERTER BOLTS
  35. Remove torque convertor bolts (3), and mark location for reassembly.
    Fig 11: Removing Transmission to Engine Bolts
    GC0011725Courtesy of CHRYSLER LLC
  36. Remove transmission bellhousing to engine bolts (3).
    Fig 12: Engine Mount Bolt
    GC0011727Courtesy of CHRYSLER LLC
  37. Remove left and right engine mount thru bolts (3).
  38. Lower the vehicle.
  39. Support the transmission with a suitable jack.
  40. Connect a suitable engine hoist to the Engine Lifting Fixture 8427.
  41. Remove engine from vehicle.
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