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

A failing alternator can leave you stranded on the side of the road. Here’s how to make sure yours is working properly, with tips from an expert.

In this test, the battery voltage is 13.8 while our alternator was pumping 14.6, creating a voltage drop of 0.8 volt, which is more than we’d like. The ground side test revealed almost no ...