I have a 1999 Nissan Maxima with only 57,000 miles. I hear a clunking sound at idle from the engine bay. Could this be the ...

We quickly become accustomed to the noises they make when we start them, while they're at idle, and after we've shut them down upon arriving at our destination. However, when a new engine noise is ...

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.

Excessive idling can cause engine damage, and experts agree that modern gas-powered engines don’t need to warm up to run ...

Thanks to a newly developed mixed-mode HCCI feature and external EGR, the engines can now run in HCCI from idle all the way to 60 mph! We had a chance to drive a Saturn Aura with an HCCI engine ...