What Does The Idle Air Control Valve Do

While starting the car a cold engine will require more air to idle smoothly.

The idle air control valve iac is usually connected to the throttle body next to the intake manifold. Sometimes parts go bad which results in your car idling strangely or stalling. I have bought a new iac and wonder what the black knob does and if it needs to be set in some way during installation. The idle air control valve also known as the idle speed control valve regulates the idle speed of your engine.

Consequently decreasing or increasing the rpm of the engine depending on what the current operating conditions call for. The idle air control iac valve for cadillac oldsmobile deville eldorado aurora 4 6l. The valve is a major management component of the engine which will either decrease or increase the number of revolutions per minute depending on what the current operating conditions call for. Having the right idling speed of an engine is vital to the economy and safety of the parts of the engine.

The idling rotation speed of the engine is how fast the engine run when the car stay still. Its purpose is to control and regulate the engine idle speed increasing and decreasing it as necessary to keep up with operating conditions. The idle air control valve is one of the not so known about parts of a vehicle that does not get discussed often. The idle air control valve is responsible for managing the engine idle speed.

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The idle control valve also commonly referred to as the idle air control valve is an engine management component that is found in one form or another on the majority of road going vehicles. So the idle air control valve iac is responsible for managing the engine s idle speed. The idle air control valve is a servo that moves a rod in the iac channel. This is controlled by the engine s computer.

Usually the spotlight is on a high level understanding of a vehicle s engine and not on the individual parts that make it why we are taking this time to actually dig a little bit deeper into some fhe symptoms of a bad idle air control valve also sometimes referred to as an iac. It has the unit as revolutions per minute revs per minute rpm. To reduce airflow to compensate for low altitude and high pressure the computer signals the servo to push the cone plug closer to the orifice. I suspect it regulates the minimum amount of air flow but am not sure.

An idle air control actuator or idle air control valve iac actuator valve is a device commonly used in fuel injected vehicles to control the engine s idling rotational speed. On the tip of that rod lay a cone shaped plug that mates to a similarly shaped depression in the air channel. In carburetted vehicles a similar device known as an idle speed control actuator is used. What is idle air control valve iac valve.

Check to see if your idle control valve is functioning properly before attempting to replace it. The valve is connected to the throttle body next to the intake manifold. An idle air control iac valve regulates the amount of air flowing to the engine when the engine is idling.