For 1990-2009 cars

### Removal Procedure

1. Disconnect the Mass Air Flow (MAF) sensor electrical connector.
2. Release the air intake hose clamps from the air cleaner housing and the MAF sensor.
3. Remove the air intake hose (6) from the air cleaner housing and from the MAF sensor.
4. Release the air inlet hose clamps at the throttle body.
5. Remove the air inlet hoses from the throttle body.
6. Disconnect the electrical connector from the switchover valve.
7. Disconnect the vacuum connections at the switchover valve and the vacuum tank.
8. Remove the intake air resonator nuts.
9. Remove the intake air resonator.

### Installation Procedure

1. Install the intake air resonator.
2. Insert the intake air resonator guide pin into the rubber mount.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

3. Install the intake air resonator nuts.

Tighten
Tighten the intake air resonator nuts to 3 N·m (27 lb in).

4. Connect the vacuum connections at the switchover valve and the vacuum tank.
5. Connect the electrical connector to the switchover valve.
6. Install the air inlet hoses to the throttle body.
7. Install the air inlet hose clamps at the throttle body.
8. Install the air intake hose to the air cleaner housing and the MAF sensor.
9. Install the air intake hose clamps to the air cleaner housing and the MAF sensor.
10. Connect the Mass Air Flow (MAF) sensor electrical connector.