What is the normal idle speed for a car?
2 Answers
Car idle speed is normally maintained between 600 and 900 RPM. Currently, there are two types of engines on the market: turbocharged and naturally aspirated. Due to differences in engines, idle speed values vary. Even for the same engine model, idle speed values may differ because of different tuning. Idle speed is a working condition of a car, referring to the engine running in neutral gear. The engine speed at idle is called the idle speed, which can be adjusted by changing the throttle size, among other methods. If the idle speed fluctuates significantly during adjustment, it can cause early wear to the engine. It is recommended to have it adjusted at an automotive repair service.
Generally, a car's normal idle speed ranges between 600 to 900 RPM, but it depends on the vehicle model and driving habits. I've driven Volkswagen cars where the idle stabilizes around 750 RPM after warming up, running very smoothly. When starting cold, the idle speed might be higher, possibly reaching 1000 RPM, but it drops down within a minute or two. If the idle speed is consistently too high, say over 1000 RPM, it could indicate a dirty throttle body or carbon buildup issues, which can increase fuel consumption and accelerate engine wear. If the idle is too low or shaky, it's crucial to check the spark plugs or fuel injection system immediately to avoid major issues. Remember, new and old cars differ; vehicles over 10 years old are more prone to idle fluctuations, so regular cleaning of fuel injectors and similar maintenance is recommended.
