Disconnect the negative battery cable before removing it.
Removing
1. Disconnect the connectors from the auxiliary air control valve and the fast idle solenoid valve, and remove the wires from the mounting clips.
2. Unscrew the mounting bolts and remove the block from the intake manifold. Remove the gasket and discard it; when installing, you must use a new one.
Installation
3. When installing, check that the mating surfaces of the block and intake manifold are clean and dry, then install a new gasket. Install the air adjustment nut, and tighten the mounting bolts securely. Connect the connectors and the wire of the negative terminal of the battery.