GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Firebird 🢒 Engine 🢒 Engine Controls - 3.8L 🢒 Air Cleaner Inlet Duct Replacement

Removal Procedure

    Notice: If the mass air flow (MAF) sensor is installed backwards, the system will go rich. An arrow cast into the plastic portion of the sensor indicates proper air flow direction. The arrow must point toward the engine.

  1. Release the fasteners located at the front of the air cleaner duct/resonator assembly.
  2. Release the button fasteners located at the rear of the air cleaner duct assembly.
  3. Loosen the hose clamp from the air intake duct at the air cleaner duct assembly.
  4. Loosen the hose clamp from the air intake duct at the throttle body assembly

    5. Object Number: 229388 Size: SH
  5. Remove the air intake duct from the air cleaner duct/resonator assembly.

Installation Procedure

    Object Number: 229388 Size: SH

    Notice: Verify that the radiator air deflector is in position before installing an air cleaner assembly. Improper installation may allow water intrusion which could damage the engine.

  1. Position the air intake duct at the front of the air cleaner assembly.
  2. Position the air intake duct onto the front of the throttle body unit.
  3. Securely fasten the hose clamp at the air cleaner assembly.
  4. Securely fasten the hose clamp at the throttle body assembly
  5. Position the air cleaner assembly onto the radiator support.
  6. Install the button fasteners located at the rear of the air cleaner assembly.