What should I do if the accent is cold and the idle speed is unstable?

Hello, there are two problems with the unstable idle speed of the cold car. The first one belongs to the idle speed control problem. Check throttle opening and control of idle speed control motor. The cold car should continuously control the high idle speed to keep the vehicle stable. If the control fails, it will cause jitter and great speed fluctuation. The second is that the valve lift is not well controlled in the cold state after excessive carbon deposition, and the vehicle will shake due to abnormal mixing ratio and return to normal in a short time. It is recommended to remove carbon deposits. Use fuel additives regularly to reduce carbon deposition.

I hope the above answers are helpful to you, thank you!

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