Lingzhi m3 vehicle rises at idle speed when waiting for traffic lights.

Hello, the reasons for your failure are as follows.

① Air leakage in the engine air intake system.

② Idle speed control is not good!

First, check whether the engine air intake system leaks air. If there is no air leakage, the idle speed is not well controlled. Generally, just clean the throttle! I'm glad 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.