What is the reason for Changan Yuexiang v3 to loosen the throttle and turn off the fire?

Hello, according to your description, the engine idle speed control is poor. It may be that there is too much carbon deposited on the accelerator, which leads to the engine computer being unable to accurately control the air intake, resulting in poor idle speed control. You just need to clean the throttle. I'm happy to answer your question. I hope I can help you. Have a nice trip! If there is something wrong with your car, ask the car mechanic. 4S shop professional technician, 10 minutes to solve.