What is the reason for the unstable idle speed of gl8?

This kind of automobile fault is generally caused by carbon deposition in throttle valve body, idle motor or fuel injector. Carbon deposits in automobile engines generally need to be cleaned regularly to prevent the automobile from idling unsteadily. Buick GL8 is a classic model of top MPv. It is exported in large quantities with the advantages of luxury, strong power, spaciousness and comfort, and is often used as a concierge car for major international events. The car uses front-wheel drive braking mode, with the length, width and height of 5213×1847×1745 mm respectively. The engine is divided into 3.0-liter v6 engine and 2.5-liter v6 engine, and the colors are white, black, blue and silver. Once the car was launched, it received a fierce market reaction, and the market sales volume has always been ahead of its peers. Million car purchase subsidy