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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 84 (Engine Mechanical - 3.7L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Intake Manifold Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Isuzu i-370, 2007 GMC Canyon, and 2007 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Intake Manifold External Components
    GM1350689Courtesy of GENERAL MOTORS CORP.
  1. Remove the throttle body. Refer to Throttle Body Assembly Replacement .
  2. Remove the battery box. Refer to Battery Box Replacement .
  3. Remove the oil level indicator and tube. Refer to Oil Level Indicator and Tube Replacement .
  4. Disconnect the brake booster hose (6) from the brake booster.
  5. Disconnect the engine wiring harness electrical connector (3) from the manifold absolute pressure (MAP) sensor.
  6. Disconnect the engine wiring harness retainer (4) from the intake manifold (5).
  7. Disconnect the positive crankcase ventilation (PCV) dirty air tube (2) from the camshaft cover.
  8. Remove the generator. Refer to Generator Replacement .
    9. Fig 2: View Of Intake Manifold Engine Wiring Harness Retainer
    GM1350691Courtesy of GENERAL MOTORS CORP.
  9. Disconnect the engine wiring harness retainer (1) from the intake manifold (2).
    10. Fig 3: View Of Engine Wiring Harness Bracket
    GM1350700Courtesy of GENERAL MOTORS CORP.
  10. Remove the upper 2 bolts securing the engine wiring harness bracket to the intake manifold.
  11. Raise and support the vehicle only high enough to access the remaining components through the wheelhouse. Refer to Lifting and Jacking the Vehicle .
  12. Remove the left front wheel. Refer to Tire and Wheel Removal and Installation .
  13. Remove the left front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement .
    14. Fig 4: View Of Wiring Harness Retainers
    GM1350692Courtesy of GENERAL MOTORS CORP.
  14. Disconnect the following wiring harness retainers from the engine wiring harness bracket:
    • The battery cable
    • The engine (4, 6)
    • The MAP sensor (5)
    15. Fig 5: View Of Engine Wiring Harness Bracket
    GM1350700Courtesy of GENERAL MOTORS CORP.
  15. Remove the remaining engine wiring harness bracket lower bolt. Remove the bracket from the engine compartment through the wheelhouse opening.
    16. Fig 6: View Of Intake Manifold
    GM1765148Courtesy of GENERAL MOTORS CORP.
  16. Remove the intake manifold bolts.
  17. Lower the vehicle.
  18. Remove the intake manifold from the cylinder head.
  19. Remove and discard the seal from the intake manifold. Discard the seal.
  20. Mask off the open ports to the cylinder head, in order to prevent foreign objects from entering the engine.
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