2. Stop the engine and connect the tachometer.
3. Separate the wiring connectors from the cooling fan motor and air conditioner magnetic clutch.
4. Apply battery voltage to the GB clamp on the idle valve and start the engine. With all electrical fittings disconnected, the engine idle speed should be 1200-1300 rpm. If not, turn the valve adjusting screw as needed.
Air Conditioner Magnetic Clutch Wiring | Air Conditioner Idle Connector Clips |
5. Stop the engine, reconnect the connectors and remove the tachometer.