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Home >> Buick >> 2006 >> Lucerne CX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 3.8L - Introduction (2 Of 2) >> Repair Instructions >> Mass Airflow Sensor/Intake Air Temperature Sensor Replacement >> Removal Procedure
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Removal Procedure

NOTE:
  • Handle the MAF sensor carefully.
  • Do not drop the MAF sensor in order to prevent damage to the MAF sensor.
  • Do not damage the screen located on the air inlet end of the MAF.
  • Do not touch the sensing elements.
  • Do not allow solvents and lubricants to come in contact with the sensing elements.
  • Use a small amount of a soap based solution in order to aid in the installation.

    Fig 1: Locating MAF/IAT Sensor Harness Electrical Connector
    GM1688912Courtesy of GENERAL MOTORS CORP.
  1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  2. Disconnect the engine harness electrical connector from the mass air flow/intake air temperature (MAF/IAT) sensor.
    3. Fig 2: View Of Air Cleaner Outlet Duct & Throttle Body
    GM1688934Courtesy of GENERAL MOTORS CORP.
  3. Loosen the air cleaner outlet duct clamp at the throttle body.
    4. Fig 3: View Of Air Cleaner Outlet Duct Clamp & MAF/IAT Sensor
    GM1689168Courtesy of GENERAL MOTORS CORP.
  4. Loosen the air cleaner outlet duct clamp at the MAF/IAT sensor.
  5. Remove the air cleaner outlet duct.
    6. Fig 4: Locating MAF/IAT Sensor & Bolts
    GM1689169Courtesy of GENERAL MOTORS CORP.
  6. Remove the MAF/IAT sensor bolts.
  7. Remove the MAF/IAT sensor.
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