What is the Touareg idling?

1, suddenly use high-power appliances, such as turning on the air conditioner. The idling speed of small-displacement vehicles with headlights on will also increase. 2. The idling motor is stuck and suddenly released. 3. The solenoid valve of carbon canister is not opened normally, so it should be closed when idling. 4. Poor wiring harness contact.

Normal conditions leading to idle speed increase:

1, the idle speed will increase when the cold car starts. When the car is cold, the temperature in the cylinder is low and the gasoline atomization is not good. In order to achieve the necessary conditions of combustion, the engine will require to increase the concentration of the oil-gas mixture, so the engine will increase the idle speed to increase the fuel injection and increase the concentration of the oil-gas mixture.

2. When the air conditioner is turned on, the idle speed may increase. Under normal circumstances, the idle power of engines below 2.0 displacement is about 6 to 8 kilowatts, and the power of automobile air conditioning is about 3 to 5 kilowatts. If the air conditioner is turned on at idle speed, the engine should maintain the normal operation of other electronic equipment and air conditioner at the same time. Normal idle speed may not be enough, so it is necessary to increase the speed.

Causes of abnormal idle speed:

1, throttle failure. Too dirty throttle will lead to throttle opening error, throttle sensitivity will be reduced, and it may not be closed well at idle speed, resulting in abnormal idle speed.

2. Idle speed control valve is faulty. The failure of idle valve will make the idle speed unable to be adjusted correctly, which will cause problems such as unstable idle speed and difficult cold start. In severe cases, there will even be no idle speed, and the engine will stall as soon as the throttle is released.

3. Sensor failure. Sensor failure, computer error, or computer failure, engine idling is abnormal.

(Photo/Text/Photo: Zhu) @20 19