Camaro V8-305 5.0L VIN F FI (1985)
On Type 1, exert a firm pressure on conical valve to retract it.
On Type 2, while turning valve in clockwise rotation, compress retaining spring from conical valve. Return spring to original position with straight
part of spring end aligned with flat surface of valve.
1.
Install IAC valve in throttle body using new gasket. Torque IAC valve to 13 ft. lbs.
2.
Connect IAC valve electrical connector.
3.
Start engine and allow to reach operating temperature.
4.
On 4-110 (1.8L) and 4-122 (2.0L) Turbo engines, IAC valve will reset idle speed when vehicle is driven at 30 MPH. On V6-181 (3.0L) and
V6-231 (3.8L) engines, ECM will reset idle speed when ignition is turned On, then Off. On V6-173 (2.8L) and V8 engines, the ECM will reset the
valve when the engine is started, then the ignition is switched off.
