Rough idling that erratically goes above and below this idle range,.Smooth idling outside this recommended idling range,.
If the idle air control valve motor is bad, however, you experience symptoms like The RPM also increases when you speed up the vehicle and could go as high as 6000 RPM depending on the speed. This is the average RPM range for most vehicles to keep the engine running while idle. How To Test Idle Air Control Valve With MultimeterĪ good idle air control valve or motor is expected to give an idle between 500 RPM and 1000 RPM, with this displayed on the tachometer on your vehicle dashboard.Symptoms Of A Bad Idle Air Control Valve.
