Auchan X7PLUS engine wobbled in winter, but it's ok recently. What happened?

I have been in the same situation. At that time, I went to the 4S shop because of this incident and found that the temperature was still too low. Because the temperature is too low in winter, the engine temperature can't go up, so there will be some jitter when running. Later, when the weather was not so cold, there would be no such phenomenon. You can get off at Baidu.