How to Tell If the Idle Control Valve Is Bad?

Answer 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 »

Top Q&A For: How to Tell If the Idle Control Valve Is Bad

Signs of a Bad Idle Air Control Valve?

An idle air control valve, also called an IAC valve, is found in every vehicle and is located inside of the throttle body. When a car idles at a red light or while parked, the idle air control valv... Read More »

Idle Control Valve Symptoms?

The idle air control valve on your car or truck works by adjusting the airflow inside your vehicle's throttle body in order to control the engine idle. The idle air control valve commonly develops ... Read More »

How to Clean an Idle Air Control Valve?

Carbon can build up on an idle air-control valve, making it stick. When it sticks, it cannot control the idle of the car--it might make the car idle at a very high RPM or, in most cases, make the c... 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.