What is the typical idle speed when starting a sedan?

[Rodrigues]

The idle speed for a sedan with a four-cylinder engine is generally around 800 RPM, while for six-cylinder and above models, it is approximately 600 RPM. However, the idle speed is not fixed and can vary depending on factors such as engine temperature and load. For example, when the engine temperature is low, the RPM may increase to ensure smooth operation and to quickly reach the optimal working temperature. As the engine warms up, the idle speed gradually returns to the normal value. An engine is a machine that converts other forms of energy into mechanical energy. Solutions for excessively high RPM include: 1. Adjusting the throttle opening; 2. Replacing the fuel injector, air conditioning clutch, engine, or transmission; 3. Adjusting the intake system; 4. Adding the appropriate engine oil.