Buick Angkewei's idle speed is unstable.

Unstable idle speed may be the fault of throttle idle speed regulating valve. In this case, the driver will go to the 4s shop to check the idle speed regulating valve.

There is an idle speed regulating motor on the throttle idle speed regulating valve, which can regulate the amount of air entering the engine at idle speed.

If the idle speed regulating motor is damaged, the engine idle speed is unstable.

Throttle is called the throat of the engine, which can adjust the amount of air entering the engine.

When we step on the accelerator pedal, the accelerator will open wider. At this time, the amount of air entering the engine will increase. After the ECU checks that the amount of air entering the engine has increased, it will command the fuel injection system to inject more fuel. In this way, the engine speed will rise and the car will accelerate.

If the accelerator is used for a long time, carbon will easily accumulate on the back of the accelerator. If the throttle carbon deposit is serious, it will also affect the engine idling instability.

Cyclists can regularly clean up the carbon deposits on the accelerator. When cleaning, they need to remove the throttle and then clean it with a special cleaning agent. They need to be wiped clean after cleaning.

After the throttle valve is cleaned and installed, the computer needs to be reconfigured, otherwise the fuel consumption of the engine will increase.

Ecu has a strong learning ability. After checking that the throttle has carbon deposit, it will use another set of adjustment logic to adjust the throttle. If the throttle valve does not match the computer after cleaning, ecu can continue to use the adjustment logic with carbon deposition to adjust the throttle valve without carbon deposition.

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