Auxiliary Air Valve (Idle Speed): Service and Repair

1. Disconnect the battery ground cable.
2. Drain the cooling system below the level of the Idle Air Control Bypass Air (IAC-BPA) valve.
3. Mark the air and coolant hoses for ease of installation, and remove the hoses from the IAC-BPA valve.

NOTE: The lower coolant line should be disconnected after the valve is separated from the upper intake manifold.

Idle Air Control Bypass Air Valve:

4. Disconnect the valve electrical connector.

Idle Air Control Bypass Air Valve:

5. Remove the two IAC-BPA nuts and bolts.
6. Pull the valve from the upper intake manifold. Disconnect the lower coolant line from the IAC-BPA valve.
7. Remove the valve and gasket. Discard the gasket.
8. To install, reverse the removal procedure. Install a new gasket, and tighten the IAC-BPA nuts and bolts to 8-10 Nm (71-88 lb in).
9. Refill cooling system and check for leaks, repair if necessary.