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The idle air control valve of the 2010 Toyota Corolla is positioned on the right side of the engine beneath the air filter housing, attached to the throttle body, close to the intake manifold on the driver's side. Signs of a malfunctioning IAC valve include erratic idle speed, engine stalling, and the illumination of the check engine light. While cleaning the valve can sometimes address the issues, it is advisable to opt for a replacement since they are quite affordable, priced around $20 to $40 and do not involve extensive labor. To perform this task, you will require a flathead screwdriver, a ratchet set with an 11mm socket, an extension, and a Torx bit size 25.
The idle air control valve of a 2010 Toyota Corolla can be found on the throttle body.