Rick's Free Auto Repair Advice

Posts Tagged: test alternator without meter

How to Safely Test an Alternator with a Digital Multimeter

How to test an alternator using a multimeter If you want to test an alternator all you need is a digital multimeter. There are some old-fashioned ways that many people still use on late-model vehicles, and those out-of-date methods can damage vehicle electronics. For example, disconnecting the battery cables while the engine is running is one of the best ways to fry your vehicle electronics instantly. Don’t do it! Cardone, a major alternator rebuilder, has issued a service bulletin regarding the right and wrong ways to test an alternator. The … Read More


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