If your car or truck's check engine light is on ... get a rough idea of what might be wrong-is to use an automotive scan tool. Here's what these pint-sized computers do and how you use one.

The gas tank has a vent as part of the evaporative system that allows gas fumes to be burned during combustion. If the vent valve is clogged, the tank will fill very slowly. This can be caused by a ...

John Paul, AAA Northeast's Car Doctor, is questioned by a reader curious about his preference between gas and electric. The ...

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Here’s how it works. The best OBD-II scanners can unlock the secrets of your car, connecting to the onboard computer and giving you access to the information it contains. Whether there's a ...

FinTech Breakthrough, an independent market intelligence organization that recognizes the top companies, technologies and ...