In some areas, it is illegal to leave your car running with the key in it unattended. Are you breaking the law?

Leaving your car running unattended to warm it up, known as 'puffing,' is illegal in many states. Learn about anti-idling laws and avoid a fine.

While it’s normal for a car to be idling high when it’s first started, if the idle doesn’t drop to normal after a minute or two, something’s probably wrong. That initial temporary high idle, which is ...

If you drive a car regularly, the odds are high that you'll have to sit and wait in it with the engine running at some point. The practice is known as idling, and it's common to do it during certain ...

It's easy to assume overheating is a result of long road trips or summer heatwaves, but when your engine gets too hot while idling, it's usually a sign of something deeper that needs immediate ...

It's a big day. You've finally installed that lumpy cam in your big-block street-stormer, and you're ready for the testdrive. The cam's all broken in, the timing and ...

Normally, a car's rpm increase steadily and predictably as you step on the gas pedal. But there are several reasons why this ...