How to CLEAN Engine Idle Valve

The idle valve or IAC valve is responsible for regulating the engine revolutions when it is empty, idling or in idle speed.
If the idle valve is dirty and poorly lubricated then the engine RPMs may behave strangely: going up, down, causing the engine to shut down.
Correct cleaning of the idle valve and its lubrication allow the engine to operate in the correct range of revolutions.
Do not forget that it is not enough to clean and calibrate the idle valve, it is necessary to calibrate the length of the cone so that the car's computer or ECM can set the RPMs to the correct values according to the manufacturer.