What is the reason why Changfeng cheetah is sometimes idle for 4000?

Hello, it means that the idle speed is unstable. I suggest you clean the throttle idle motor. I hope my answer is helpful to you. You can keep asking me questions. Thank you for your support to the owner. I'm glad to answer your question. I wish you a happy life! If there is something wrong with the car, ask the car master. 4S shop professional technician, 10 minutes to solve.