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. 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.