Turn the steering wheel and find that the dashboard will float at idle speed, but it will be stable without turning. What is the reason?

When the hydraulic booster pump works, the engine needs to do work. Idle running is the best engine speed when auxiliary equipment stops working. When the hydraulic booster pump enters the working state, it needs an instantaneous work (commonly known as loading). The computer version of the engine will control the computer to inject more fuel. In this process, the computer will have a reaction time (usually a few tenths of a second), and the idle speed will decrease when the engine is running with load. After entering the computer reaction time, the fuel injection quantity increases, the idle speed rises, and then the idle speed returns to normal. Idle speed is always changing, which can be seen by reading the data stream with professional equipment. These are the basics of car repair.