What should Grace do if her idle speed is too high and unstable?

Judging from the above-mentioned vehicle use phenomenon, according to the vehicle configuration and maintenance cases, this idle speed fluctuation and instability are mostly the reasons for the poor throttle alignment. Therefore, it is suggested to go to the repair shop to check the throttle return, or assist the throttle return when the idle speed value is high, and observe the change of the idle speed value, otherwise it can be lubricated and adjusted.