GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 2003 🢒 Aurora 🢒 Engine 🢒 Engine Mechanical - 4.0L 🢒 Intake Manifold Removal

    Object Number: 522640 Size: SH
  1. Remove the brake booster hose from the throttle body.

    2. Object Number: 522641 Size: SH
  2. Remove the fuel pressure regulator vacuum tube from the fuel pressure regulator and the water crossover.

    3. Object Number: 522644 Size: SH
  3. Remove the PCV fresh air feed tube from the camshaft cover and the throttle body.

    4. Object Number: 798638 Size: SH
  4. Remove the PCV dirty air tube from the PCV orifice in the right camshaft cover and from the intake manifold.

    5. Object Number: 490817 Size: SH
  5. Disconnect the fuel injector electrical connectors (1) from the fuel injectors.
  6. Remove the fuel injector wiring harness.

    7. Object Number: 522654 Size: SH
  7. Remove the fuel rail bracket nut from the engine lift bracket.

    8. Object Number: 522658 Size: SH
  8. Remove the fuel rail studs.
  9. Lift and remove the fuel rail with injectors.

    10. Object Number: 522666 Size: SH
  10. Loosen the plenum duct clamp (1) in order to remove the intake manifold.

    11. Object Number: 522669 Size: SH
  11. Remove the intake manifold bolts.

    12. Object Number: 880571 Size: SH
  12. Remove the intake manifold.