Where is the idle speed control located?
throttle body
The idle air control (IAC) valve is located on the throttle body of fuel-injected engines, where it works with the vehicle’s ECU to electrically regulate airflow to the engine to ensure smooth idling.
What controls engine idle speed?
The Idle Speed Control (ISC) valve, also called an Idle Air Control (IAC) valve, is used on both throttle body and multipoint fuel injected engines to regulate idle speed. The ISC valve is controlled by the engine’s computer (powertrain control module or PCM).
What is the correct idle speed?
600 to 1000 RPMs
In most of today’s cars, an idle speed of 600 to 1000 RPMs is average. If your car is idling rough, though, it won’t feel smooth. The RPMs will jump up and down, for example, or they’ll fall below 600 RPM (or whatever is typical for your vehicle).
Where is the idle air control valve on a Toyota 4Runner?
The idle air control valve (usually called an IAC valve) helps maintain the proper idle speed on your vehicle. The Toyota 4Runner idle air control valve is mounted on the throttle body, as it is in all vehicles. Sometimes, carbon buildup near your idle air control valve can cause idling problems.
What should I do if my idle control motor is disconnected?
The engine should still start and run without any issue despite the idle control motor being disconnected. Be sure to tuck the wiring you disconnected up in the engine bay so it doesn’t get caught in any moving parts. Look for a difference in idle speed.
How can I tell if my idle control valve is working?
To check if an idle control valve is working properly, start by turning on your engine and letting it run for a minute or 2. Then, when it’s at an idling speed, take note of the RPMs in your car. Next, turn the engine off and disconnect the idle control motor under your hood.
How do you remove an idle air control valve?
Unhook the electrical connection attached to the idle air control valve. Pull off the three hoses to detach them from the valve. Remove the four mounting screws on top of the idle air control valve. Pull the valve off and remove the old gasket.