A quick way to precisely diagnose myriad automotive problems—or at the very least get a rough idea of what might be wrong—is to use an automotive scan tool.

If you're looking to get into automotive electrical testing, Harbor Freight has just the right kit for you to get started. Here's what it does.

Your vehicle's computer contains a wealth of information that it gathers from sensor on almost every system. It used to be that only shops had access to that information, but that's not ...