When waiting for the red light, the engine shook.

What you said should be the sound of the cooling fan, because there is no fixed time for the cooling fan of the air conditioner to start. When the water temperature exceeds a certain standard, the cooling fan will start to cool down, causing the engine to shake slightly. .

It should be due to the Tik Tok of the engine, so it is necessary to check whether it is idle jitter caused by not cleaning the throttle for a long time. Or because the damping rubber block of the engine is loose. .

There is noise. See if there is an alarm sound on the display screen first. Perhaps the water temperature is too high caused by the engine fan not turning, or the sound caused by the fan turning. .

Five shortcomings of dry dual clutch.