Bench testing the starter is the most effective way to find out if the starter motor is in fact BAD. This is an easy test that you can accomplish yourself without having to take the starter motor to AutoZone or O'Reilly Auto Parts or Pepboys Auto Parts.
This is an OFF Car test. So you'll need to remove the starter motor from the car or truck to bench test it.
It's a very easy test to do. The hardest part is removing the starter motor. Below you're gonna' find some useful and important tips that'll make this test a breeze.
Puedes encontrar este tutorial en Español aquí: Cómo Probar El Motor De Arranque En Banco (en: autotecnico-online.com).
Before we start you may want to know what are some of the most common symptoms of a BAD starter:
I have seen so many folks have trouble with this very simple test. By following these simple guidelines you'll be able to correctly diagnose a BAD starter.
Following these simple guidelines will save you a headache and or having to replace a good starter.
The photo of the starter motor used in this article is of a 2000 Mazda Protegé. The starter motor on your vehicle will look similar. So, whether your car or truck is a Ford, a Chevrolet, a Nissan, a Mazda, a Dodge, a Chrysler, a Toyota or whatever... This starter bench test applies.
To bench test the starter you'll need battery jumper cables, a jumper wire, a working battery, and of course the starter motor out of the car or truck. These are the circuit descriptions of the photo above: