How many rpms is normal for idle?
How many rpms is normal for idle? Typically, engines idle at about 600-800 rpm. Older engines may go up to 1200 rpm or more while warming up. But if the engine is revving up while idling, even after it's sufficiently warmed up, you might have a problem. High idle speeds waste fuel, cause extra wear and tear on your engine, and can be unsafe as well. What does it mean when your car idles at low RPMs? The car will feel rough and bouncy when the engine is running. The car will also idle below its regular speed, display inconsistent...