What should I do if Li Xia's idle speed is unstable?

You should go to a professional car maintenance agency or 4S for maintenance in time. The general reasons for unstable idle speed are as follows:

1. The plug of the idling motor has dropped, so just plug it in directly;

2. After the air conditioner is fluoridated, it is normal to idle for 800-900 rpm. Cause: After the air conditioner is fluorine-free, the air conditioner temperature sensor (thermistor) is turned on, which makes the air conditioner idle speed increasing valve start, resulting in high idle speed!

This situation is generally due to the dirty throttle, or the failure of air flow meter or pressure sensor, which leads to inaccurate intake data and low idle speed.

3. Parts are too dirty: what throttle valve, idle valve, and then adjust the ignition time.

4. When the idle speed is unstable, I will first observe the rear exhaust pipe and try to see if there is black dust in the exhaust pipe. If yes, it is proved that the working condition is not good, and the reasons for the bad working condition are divided into several aspects:

① There are too many carbon deposits on the throttle (including idle motor) and nozzle. Clean the throttle for 2 wk and the nozzle for 4 wk as required.

(2) The sensor didn't touch the real oxide, which led to the incorrect transmission signal, which led to the error of fuel supply and ignition of the driving computer, and led to the incorrect mixing ratio and ignition time.

③ Spark plug flashover is not strong enough (generally, ordinary spark plugs are replaced once every 2 kilometers), and the resistance value of high-voltage line is incorrect (with intermediate fracture phenomenon), resulting in intermittent flashover. These are the causes of engine idling instability, which need to be investigated one by one.

5. The water pipe clamp at the thermostat is close to the distributor, just in time for the leakage of the distributor cover;

6. It is recommended to clean the lower throttle and spark plug or check the falling wheel. My new car is idling unsteadily, so I'll be fine with a new wheel. This is the problem of general idleness.

7. Check the cylinder pipeline, clean the fuel injector and check the engine buffer block;

8 The mixing ratio is out of balance and too rich. The high voltage line is not good; ;