Corolla's idle speed fluctuates.

Hello, this situation is probably due to too much carbon deposition in the throttle position, which leads to insufficient air intake. Or the spark plug gap is too large. It is recommended to go to the 4s shop or repair shop to clean the throttle as soon as possible. I hope my answer is helpful to you. If you have any questions, please feel free to ask the car master. 4S shop professional technician, 10 minutes to solve.