Napa Alternator Test - Our test every vehicle program includes inspecting five critical automotive components: Alternator testing confirms all internal circuitry. Only an experienced diyer should inspect the alternator on their own. If youโre new to this task, take your vehicle to your nearest napa autopro service centre. The battery voltage goes down to 11. 4 when the engine is running 2000 rpm and the lights etc are switched on. The original alternator in my 2003 ford focus broke, and i replaced it with a new. I removed it from the vehicle and took it to napa and they said it tests good. I called my usual mechanic and he said it could still test good and have an internal diode burned out. Even napa has quality levels still i bet, some not much different except for the warranty. Wouldn't want to deal with any but the higher level to hope for a better one, or. To test if your alternator is bad you will need to perform a test with either a voltmeter or a multimeter. If you use a multimeter you will need to set it at dc volts to measure the voltage of.
Our test every vehicle program includes inspecting five critical automotive components: Alternator testing confirms all internal circuitry. Only an experienced diyer should inspect the alternator on their own. If youโre new to this task, take your vehicle to your nearest napa autopro service centre. The battery voltage goes down to 11. 4 when the engine is running 2000 rpm and the lights etc are switched on.