Is it normal for the car to idle at 1500 RPM when starting in summer?

[SanCorbin]

It is normal for the car to idle around 1500 RPM when starting in summer. During startup, the vehicle has a cold fast idle because the engine is cold, and the mixture cannot burn stably. The engine's operating conditions are just beginning, so it needs to increase the idle speed to prevent stalling. Unstable car idling can cause the following hazards: 1. High idle speed: If the car's idle speed is too high, check whether the intake manifold is loose or leaking. This will significantly increase fuel consumption and also lead to more engine carbon deposits. 2. Low idle speed: If the car's idle speed is too low, there is a safety risk of stalling while driving. 3. Fluctuating idle speed: If the car's idle speed fluctuates, it may be due to spark plugs or ignition coils not working properly, causing the engine pistons to malfunction and resulting in severe shaking.