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Home › Cadillac › 2005 › CTS V › Repair and Diagnosis › Engine Performance › System › Engine Controls - 5.7L - Introduction › Repair Instructions › Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor Replacement › Installation Procedure

Installation Procedure

    Fig 1: View Of MAF/IAT Sensor Electrical Connector
    GM1385109Courtesy of GENERAL MOTORS CORP.
    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.

  1. Carefully install the MAF/IAT sensor to the air cleaner outlet duct. Ensure that sensor is clocked properly.
    2. NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Tighten the air cleaner outlet duct clamp (2).

    Tighten:  Tighten the air cleaner outlet duct clamp to 3 N.m (27 lb in).

  3. Loosely install the air cleaner outlet duct assembly to the vehicle.
  4. Connect the MAF/IAT sensor electrical connector.
    5. Fig 2: Loosening Air Cleaner Outlet Duct Clamps
    GM1385108Courtesy of GENERAL MOTORS CORP.
  5. Install the air cleaner outlet duct to the air cleaner housing.
  6. Tighten the air cleaner outlet duct clamps (1, 2).

    Tighten:  Tighten the air cleaner outlet duct clamps to 3 N.m (27 lb in).

  7. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 5.7L.
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