Emergency help: What is the reason for the unstable neutral braking speed and flameout?

First of all, never slide in the middle of waves. This is a relatively low-level driving technique, which is not safe or fuel-efficient. Your problem is obviously that the accelerator is dirty. I'm sure it's okay to clean the throttle. What you can do, just wash it yourself. Remember never to put the cable, or you will get an error code on the dashboard. If you can't wash it yourself, wash it in 4 s. In fact, it's not really expensive, and the washing interval is not too frequent, so it doesn't matter.

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