Throttle getting stuck, causing slight vibration on 2008 Toyota Corolla

I have a slight vibration when my my is idling. I was told that my throttle need cleaning that it was getting stuck. can you help me, by giving me some advice?

Asked by for the 2008 Toyota Corolla
1 answer
Likely talking about throttle bore cleaning because coking buildup can cause too much air flow turbulence that can cause rougher idle.