Is it normal for the engine speed to be 1500 when starting the vehicle?
1 Answers
It is normal for the engine speed to be 1500 when starting the vehicle. High idle speed during cold starts is a common issue. During warm starts: The normal operating temperature of the engine is above 90 degrees. During a warm start, the temperature and lubrication are just right, allowing gasoline to fully evaporate and burn, resulting in strong engine performance. During cold starts: At this time, the engine temperature is relatively low, and gasoline cannot fully vaporize, leading to lower ignition efficiency. Therefore, the engine control unit automatically increases the fuel injection volume and raises the engine speed to ensure normal operation. However, since gasoline does not burn completely during this time, it can easily lead to wasted fuel and carbon buildup.