What should I do if the idle speed of the Big Dipper is unstable?

1. Most of them are related to dirty throttle. For a car with a throttle, if there is carbon deposit or other dirt on the throttle, the air intake will be reduced. 2. The idle valve is damaged or the computer board is faulty, and the air inlet pipe leaks. The treatment method is to clean the throttle first, and then use the computer to detect and clear the fault code. If it cannot be disassembled, sensor damage is detected. Clean it with cleaning solution before putting it back. If it does not work, a new sensor must be replaced.

It may be that the idle valve is damaged, or the computer board is broken, and the air inlet pipe leaks, resulting in unstable idle speed.

The leakage of intake manifold or various valves directly affects the quality of fuel mixture and combustion effect. Parts that may leak, such as intake manifold, vacuum tube, activated carbon canister valve, exhaust gas recirculation (EGR) valve and positive crankcase ventilation (PCV) valve, need to be overhauled one by one.

The instability of automobile idle speed is mainly manifested in the fluctuation and unstable pointing of the tachometer pointer at idle speed, which is often accompanied by idle jitter. In general, the idle speed of the engine is determined, and the specific level depends on the specific vehicle type adjustment. Under normal circumstances, high idle speed will lead to relatively high fuel consumption, but low idle speed will lead to engine jitter or even flameout.

Troubleshooting methods generally include: cleaning the throttle and air intake, cleaning and checking the fuel injector, replacing electrical components, checking the fault point of the wiring harness, cleaning the grounding point, and repairing the mechanical structure of the engine.

(Photo/Text/Photo: Ask the Beast in the Q&A) Weilai ES8 Weilai ES6 Ask the World M5 Weilai EC6 Xpeng Automobile P7 Chuanqi GS8 @20 19.