Removing Positive Battery Cable To Test Alternator. When you start up your car look at your interior lights. How do I test to see if my alternator is bad.
I have heard Test the alternator by disconnecting the battery with the engine runningTHIS IS NOT TRUE- A battery acts as a voltage stabilizer or filter. Dear Tom and Ray. Here is a link that shows how to test an alternator.
Technically yes but that test can also wind up destroying all the electronics in your car.
It should stay running if you take the positive cable offbut as already notedits not a good way to test the alternator. Check all the cables and connectors around the alternator and battery. How to test an alternator THE RIGHT WAY. Test the alternator.
