Whenever possible, try to avoid hard or sudden acceleration to high speeds so that you prevent your engine from damage caused by over-revving.
Step 4: Maintain fuel efficiency.
For the best fuel efficiency, keep your RPMs between 1,500 and 2,000 RPM when driving at a constant speed.
Is it normal for a car to idle at 500 rpm?
For example, if your car has a 2.0 liter engine, the idle speed should range from 500 to 800 rpm. A ear with a 2.5 liter engine should have an idle speed from 550 to 750 rpm. If you’re unsure with the type of engine you may have, you should be in good shape if the car’s idle speed is anywhere between 600 to 1000 rpm.
Why does my car idle at 1000 rpm?
High engine idle can be caused by a number of different things. A stuck/binding throttle, vacuum leak, bad throttle position sensor, coolant or air flow sensor all can be the cause of a high idle speed. Have a certified technician perform a diagnosis for the high idle to find which is the cause.
Why is RPM high when car starts?
High RPMs in the cold is a result of combustion taking place in the engine. Your car is able to start because gasoline and air are coming together to form a spark. As soon as the vehicle turns on, the RPM goes back to normal, but that initial bump in RPM speed can take some drivers by surprise.
Photo in the article by “Wikipedia”