Why does the Chery A3 have unstable idle speed with fluctuations?
1 Answers
Chery A3's unstable idle speed is mainly caused by low ignition energy, malfunctioning water temperature sensor, and improper air-fuel mixture ratio. Low ignition energy: When the engine temperature is insufficient, fuel atomization is poor. After prolonged use, the spark plug gap increases, leading to decreased ignition energy which affects power performance and causes unstable idle. Malfunctioning water temperature sensor: A faulty water temperature sensor cannot accurately determine engine conditions, resulting in reduced fuel delivery and unstable car idle. Improper air-fuel mixture ratio: If the air-fuel mixture ratio in the car's engine compartment is improperly adjusted, the vehicle becomes prone to shaking.