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 ...

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 ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? The check engine light by its nature is vague, just a general indication that ...

Modern OBD-II scanners let everyday drivers access their car’s diagnostic trouble codes, live data, and system health without a mechanic’s visit. From budget-friendly Bluetooth adapters to pro-grade ...

From decoding check engine lights to streaming live engine data, OBD-II scanners have changed how drivers maintain and repair their cars. With the right tool, you can pinpoint problems early, avoid ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. 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 ...

Q How useful are the under-$100 scanners you see at the auto supply store? They make it sound like you can fix anything with them. — Gene Hammond A: The tools Gene is referring to are OBD-II scan ...