The speed in the original direction is reduced, and the headlights are unchanged. The lifting glass is also a little shaky. I just changed the idle motor and cleaned the throttle.

I have encountered this problem twice, both because the battery is running out.

The specific reason: the power-assisted device consumes a lot of power when it is turned in place, and the headlights and window rolling machines also consume a lot of power. When the battery voltage is insufficient, the above operation will cause the idle speed to decrease, and the car will shake and feel that it will turn off.

Test method: put in neutral, step on the accelerator, keep the engine speed at 1500 to 2000 rpm, then try to hit the direction, turn on the headlights and lift the glass. If the car doesn't shake, it's basically time to change the battery.

If the battery has not been replaced for more than two years, the main reason is the aging of the battery. If the battery is replaced less than two years ago, it is also necessary to check whether the generator works normally. At the same time, pay attention to turning on the light, listening to the radio, honking the horn, turning on the fan, etc. After the car is turned off, there is no need for battery to supply power separately.