The trouble light of China Zunchi 2003 is on. What is the unstable idle speed? Now the cold car is not working.

The direct cause of engine idling instability refers to the dirty, worn and incorrect installation of mechanical parts, which leads to the change of single cylinder power, resulting in the imbalance of cylinder power and unstable engine idling;

The indirect cause of engine idling instability refers to the abnormality of engine electronic control system, which leads to poor combustion of mixed gas, making it difficult to balance the power of each cylinder and making the engine idling unstable.