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Home >> Buick >> 2004 >> Century Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 134 (Engine Mechanical - 3.8L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Intake Manifold Removal - Upper

Intake Manifold Removal - Upper

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the spark plug wires from spark plugs and retaining clips.
  2. Remove the wiring harness from fuel rail.
  3. Disconnect the ignition control module connector from the ignition control module assembly.
  4. Remove the ignition control module assembly nuts.
    5. Fig 1: Ignition Control Module Assembly
    GM638520Courtesy of GENERAL MOTORS CORP.
  5. Remove the ignition control module assembly.
  6. Remove the fuel injector rail nuts.
    7. Fig 2: Fuel Injector Rail
    GM965455Courtesy of GENERAL MOTORS CORP.
  7. Remove the fuel injector rail.
  8. Remove the engine wiring harness heat shield bolt and nut.
    9. Fig 3: Engine Wiring Harness Heat Shield
    GM965462Courtesy of GENERAL MOTORS CORP.
  9. Remove the engine wiring harness heat shield.
  10. Remove the throttle body nuts and bolts.
  11. Remove the throttle body.
    12. Fig 4: Throttle Body & Seal
    GM965473Courtesy of GENERAL MOTORS CORP.
  12. Remove the throttle body seal.
  13. Remove the upper intake manifold bolts and studs.
    14. Fig 5: Upper Intake Manifold
    GM965482Courtesy of GENERAL MOTORS CORP.
  14. Remove the upper intake manifold.
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