Low (<500) RPM during engine idling - 2002 Sonata, 4 cyl, GL
 

The engine RPM dipped to around 500 and then &lt;500 this morning when I was waiting at a traffic light (signal). The vehicle starting vibrating a lot and it was not the normal type of vibration when the car is idling. Do let me know what would have potentially gone wrong with my car.

RE: Low (<500) RPM during engine idling - 2002 Sonata, 4 cyl, GL
 

The Idle Air Control valve (IAC) is probably dirty or partially clogged. It's also known as the Idle Speed Control Actuator (ISCA).

RE: Low (<500) RPM during engine idling - 2002 Sonata, 4 cyl, GL
 

Is this something that we can clean (if so, can you help with the steps); else if I need to take it to a mechanic, what exactly do I need to ask them to perform.

RE: Low (<500) RPM during engine idling - 2002 Sonata, 4 cyl, GL
 

Take it to a mechanic.