Idle speed problem, the idle speed is unstable, the normal idle speed is 800 rpm, while mine is jumping up and down at 800 to 850 rpm, and stepping on the accelerator with my foot is stable at a stand

Idle speed problem, the idle speed is unstable, the normal idle speed is 800 rpm, while mine is jumping up and down at 800 to 850 rpm, and stepping on the accelerator with my foot is stable at a standard. Your car has an electronic throttle and its idle speed is unstable. Have you repaired this recently? If it has been repaired, only the throttle needs to be matched.

If there is no maintenance, it can be judged as: 1, and there may be something wrong with a sensor. 2. The air inlet or air filter may be blocked. 3. Camshaft position sensor failure (phenomenon: cold car is difficult to strike a fire) 4. The fuel injector is blocked. 5. Some lines are short-circuited. 6. The fuel pump or fuel pressure regulator is faulty. Wait a minute.