Hello, Master Lin, my car is an old Excelle in 2005. At first, the idle speed was low, and then it became high after clearing the throttle. I changed the idle motor and changed a few.

Oh, I'm sorry, it's my day off, and now I see your question. The last answer was very good and very level. Pay attention to the law, the throttle is very likely, but it is not just the problem of idle motor. In general, if a component is still exactly the same, don't doubt it for the time being; If it drops slowly at 1800, it is suspected that the water temperature is not accurate; If it is unstable, it is necessary to check whether the throttle position sensor correctly provides idle state signal or vacuum leakage.