The owner of this Ram 3500 truck has been going nuts trying to find out what was wrong with his truck, but dealers couldn't ...

We tested popular wideband O₂ controllers against lab-grade equipment to see how accurate their lambda readings really are under real engine conditions.

As mercury thermometers are a thing of the past, you no longer have to wait several minutes to read a small red line. Instead, there are now five different types of thermometers — rectal, oral, ...