On a 1984 Ford Ranger, the idle air control (IAC) valve is typically located on the throttle body, which is attached to the intake manifold. It's usually positioned near the intake manifold's front, connected to the throttle body assembly. The IAC valve helps regulate engine idle speed by controlling the amount of air that bypasses the throttle plate. Make sure to consult a repair manual for specific details and diagrams for your vehicle model.
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