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Home >> Buick >> 2009 >> Lucerne CX, 3.9 1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 3.9L - Introduction >> Repair Instructions >> Air Cleaner Assembly Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Locating MAF/IAT Sensor & Bolts
    GM1689169Courtesy of GENERAL MOTORS CORP.
  1. If the upper air cleaner housing was replaced only perform the following steps otherwise proceed to step 6.
  2. Install the MAF/IAT sensor.
    3. CAUTION: Refer to Fastener Caution
  3. Install the MAF/IAT sensor bolts and tighten to 4 N.m (35 lb ft).
    4. Fig 2: Identifying Air Cleaner Outlet Duct Clamp At MAF/IAT Sensor
    GM2146965Courtesy of GENERAL MOTORS CORP.
  4. Install the air cleaner outlet duct and tighten to 4 N.m (35 lb in).
    5. Fig 3: Identifying Air Cleaner Lower Housing
    GM1674290Courtesy of GENERAL MOTORS CORP.
  5. Place the lower air cleaner housing over the studs and push down firmly in order to engage the grommets to the studs.
    6. Fig 4: Locating ECM Harness Electrical Connector
    GM1664479Courtesy of GENERAL MOTORS CORP.
  6. Install the engine harness and PCM to the lower housing.
    7. Fig 5: Identifying Lower Housing Clips
    GM1670787Courtesy of GENERAL MOTORS CORP.
  7. Install the air cleaner upper housing.
  8. Engage the 3 integral clips (1) on the lower housing to the upper housing.
    9. Fig 6: View Of Air Cleaner Outlet Duct & Throttle Body
    GM1688934Courtesy of GENERAL MOTORS CORP.
  9. Install the air cleaner outlet duct to the throttle body and tighten the clamp (1) to 4 N.m (35 lb in).
    10. Fig 7: Identifying Secondary Air Injection Pump Inlet Hose Quick Connect Fitting
    GM1755968Courtesy of GENERAL MOTORS CORP.
  10. Connect the AIR hose quick connect fitting (1) to the air cleaner, if equipped. Refer to Plastic Collar Quick Connect Fitting Service .
    11. Fig 8: Identifying Positive Crankcase Ventilation Tube Quick Connect Fitting
    GM2146960Courtesy of GENERAL MOTORS CORP.
  11. Connect the PCV tube quick connect fitting (2) to the air cleaner outlet duct. Refer to Plastic Collar Quick Connect Fitting Service .
    12. Fig 9: Locating MAF/IAT Sensor Harness Electrical Connector
    GM1688912Courtesy of GENERAL MOTORS CORP.
  12. Connect the engine harness electrical connector to the MAF/IAT sensor.
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