The check engine light is both a friend and foe. For those who take their cars to the shop for repairs, it’s a symbol of impending treachery and rising credit card bills. But to those who shoulder the ...

In 1976, Chrysler ushered in the computer engine management system era with their Electronic Lean Burn 400 4-bbl. This early computerized spark-advance control system was developed to make the engine ...

Whether you are a gearhead or not, as a car owner, it is always important to be on top of everything as far as maintenance and upkeep are concerned. This does mean regularly scheduled trips to a ...

OBD-II diagnostic device BlueDriver interprets engine error codes to suggest what might need fixing, and lets you know if your car is ready for a smog check. Wayne ...

Ever since OBDII vehicles became the norm, anyone interested in repairing them must have a scan tool at hand. Some people refer to those devices as scan tools, diagnostic machines, or OBD dongles. In ...

Add Yahoo as a preferred source to see more of our stories on Google. Modern cars are technological marvels, and understanding what’s happening under the hood has never been more important—or more ...

The world of car diagnostics has changed a lot over the last 50 years. Back in the '70s and earlier, a mechanic's most valuable diagnostic tools were usually their eyes and ears. You could figure out ...

Which OBDII scanners are best? Those annoying dashboard warning lights only tell you that something is wrong. They don’t tell you that the problem could be anything from a loose gas filler cap to a ...

At Hearst Autos, we're constantly trying out new gear for car, trucks, and sometimes motorcycles—and the people who love them. That includes tools for working on vehicles, aftermarket products for ...