LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2004 >> Century Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 87 (Engine Mechanical - 3.8L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Intake Manifold Replacement - Lower (L36) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of EVAP Canister Purge Valve (L36)
    GM217748Courtesy of GENERAL MOTORS CORP.
  1. Remove the evaporative emissions (EVAP) canister purge solenoid.
    2. NOTE: The two bolts which fasten the lower intake manifold to the cylinder head are accessible only after the upper intake is removed. The bolts are located in the right front and left rear corners of the lower intake manifold. Remove the upper intake manifold to service the lower intake.
  2. Remove the upper intake manifold. Refer to Intake Manifold Replacement - Upper .
  3. Remove the generator brace. Refer to Generator Brace Replacement (L36) or Generator Brace Replacement (L67) in Engine Electrical.
    4. Fig 2: View Of Drive Belt Tensioner
    GM326960Courtesy of GENERAL MOTORS CORP.
  4. Remove the drive belt tensioner with the heater water bypass inlet pipe. Refer to Drive Belt Tensioner Replacement .
    5. Fig 3: EGR Outlet Pipe & Bolt
    GM190556Courtesy of GENERAL MOTORS CORP.
  5. Remove the exhaust gas recirculation (EGR) outlet pipe bolt from the lower intake manifold.
  6. Remove the EGR outlet pipe from the lower intake manifold.
    7. Fig 4: Radiator Inlet Hose
    GM405984Courtesy of GENERAL MOTORS CORP.
  7. Remove the radiator inlet hose from the water outlet housing. Refer to Radiator Hose Replacement - Inlet (3.1L) or Radiator Hose Replacement - Inlet (3.8L) in Engine Cooling.
    8. Fig 5: ECT Sensor Electrical Connector
    GM406011Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the engine coolant temperature (ECT) sensor electrical connector.
    9. Fig 6: Generator Brace Bracket & Bolts
    GM371022Courtesy of GENERAL MOTORS CORP.
  9. Remove the generator brace bracket bolts.
  10. Remove the generator brace bracket.
    11. Fig 7: Lower Intake Manifold & Bolts
    GM190545Courtesy of GENERAL MOTORS CORP.
  11. Remove the lower intake manifold bolts.
  12. Remove the lower intake manifold.
    13. Fig 8: Lower Intake Manifold Seals
    GM153573Courtesy of GENERAL MOTORS CORP.
  13. Remove the lower intake manifold seals.
    14. Fig 9: Lower Intake Manifold Gaskets
    GM153574Courtesy of GENERAL MOTORS CORP.
  14. Remove the lower intake manifold gaskets.
    15. Fig 10: Water Outlet Housing, Bolt & Stud
    GM406012Courtesy of GENERAL MOTORS CORP.
  15. If replacing the lower intake manifold, remove the water outlet housing bolt, stud and the water outlet housing.
  16. If replacing the lower intake manifold, remove the ECT sensor.
  17. Inspect the flatness of inlet flanges.
  18. Clean the intake manifold mating surfaces.
  19. Clean the intake manifold bolts and bolt holes of adhesive compound.
scientia non olet · About LEMON Manuals