How does Hyundai Rena reduce idle speed after cleaning the throttle combustion chamber?

Hello. Don't worry about this situation. It's the throttle. It doesn't match the computer after cleaning, that's all. Matching with computer detector can eliminate faults. I hope my answer can help you. Have a nice ride! If there is something wrong with your car, ask the car mechanic. 4S shop professional technician, 10 minutes to solve.