For all of you who have a multimeter thrown in a drawer or toolbox but don’t know how to use it, these instructions will help in your search for missing voltage.

When your car doesn’t start, often the battery is the culprit. Unfortunately, most vehicle owners do not check their battery until it fails. As preventative maintenance, the suggested best practice is ...

To test a battery’s DC charge, touch the red probe to its positive terminal and the black probe to its negative terminal; the multimeter will display the existing charge in the battery.

This video covers the essential steps to properly test a car's alternator and diagnose common alternator issues. The guide ...

Specific Gravity Test (for lead-acid batteries): If you have a lead-acid battery with removable caps, you can check the specific gravity of the electrolyte using a hydrometer.

Learning how to test glow plugs ensures your diesel engine remains reliable and efficient. Here is how to test glow plugs.

Testing your car battery is vital to ensure it is working properly. Where can you have it checked, and how often should you do it? Here's what you need to know.