What is an idle air control valve?

Answer The idle air control valve, or IAC as more commonly known, controls the idling speed of your vehicle's engine. If your engine seems to go up and down at different RPMs while idling, the IAC may be ... Read More »

Top Q&A For: What is an idle air control valve

What Is the Idle Air Control Valve?

Automotive engines are composed of many intricate parts. These parts must function with precision to ensure the engine functions properly. One crucial component in a car engine is the idle air cont... Read More »

What Are the Functions of an Idle Control Valve?

Engine idling refers to the speed at which an internal combustion engine runs when the gear is disengaged. This idle speed is controlled by a device called an idle control valve, or idle air contro... Read More »

How to Tell If the Idle Control Valve Is Bad?

All cars today have a number of systems that control every aspect of their operation. Years ago when all cars were carburated, the engine operation was dependent on the carburator for all fuel mana... Read More »

GM Idle Air Control Valve Problems?

A driver can noticeably hear their car's idling while the vehicle is stopped. If there is a change to the idling speed, like with a GM vehicle, there are ways to diagnose the problem.