What is the normal idle speed for a cold engine?
1 Answers
An idle speed of around 1000 RPM is normal for a cold engine. Additional information about cold engine idle speed is as follows: 1. Generally, after a cold start, there is a high idle speed process, which is more noticeable in winter. This phenomenon is controlled by the vehicle's onboard computer. Once the engine reaches a certain temperature, the idle speed will return to normal. This helps accelerate the engine temperature rise to normal operating conditions during cold starts. 2. The normal idle speed range is typically between 500 to 850 RPM. During a cold start, the initial idle speed can be around 1500 to 2000 RPM. Once the engine coolant temperature reaches 90 degrees, the idle speed will stabilize within the specified normal range.