For 1990-2009 cars

### Removal Procedure

1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
2. Disconnect the engine harness electrical connector from the secondary air injection (AIR) check valve.
3. Disconnect the AIR pump outlet hose quick connect fitting at the AIR check valve. Refer to Plastic Collar Quick Connect Fitting Service .
4. Remove the AIR check valve bolts.
5. Remove the AIR check.
6. Remove and discard the AIR check valve gasket.
7. Clean the check valve gasket mating surfaces.

### Installation Procedure

1. Install a NEW AIR check valve gasket onto the exhaust manifold.
2. Install the AIR check.

Notice: Refer to Fastener Notice in the Preface section.

3. Install the AIR check valve bolts.

Tighten
Tighten the bolts to 22 N·m (16 lb ft).

4. Connect the AIR pump outlet hose quick connect fitting at the AIR check valve. Refer to Plastic Collar Quick Connect Fitting Service .
5. Connect the engine harness electrical connector to the AIR check valve.
6. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .