Shining Battery Light, Puzzling Car Performance A Diagnostic Enigma

8 Culprits Your Battery Light On but Alternator is Charging | How to Fix Battery Light On Dashboard ... Flashing Battery Light on a Car: 5 Common ... You will find a bad alternator, most likely. Or take a volt meter and test voltage at the battery. Should be about 12 volts, engine off, and ... Your engine is off, at this point. When your engine is running and your alternator is charging, the voltage from the charging alternator is felt ... The alternator turns on the battery light but If I were you I would replace the light first. Or you can test the light by grounding the brown/ ... This light should came on only if engine is on but alternator is not charging for whatever reason. This light is actually not idiot at all, the ... This is why if you have a weak battery and someone does an alternator test while the vehicle is running, the vehicle will stall out, it drops ... edit: and a battery doesn't "charge straight up" when the car starts, the alt just starts supplying the 14.4 volts a car runs on and the battery ... If the battery light is on you could have low charging system voltage from your alternator not charging enough voltage , when voltage gets low it can affect ... A depleted battery that won't hold a full charge ends up overworking the alternator, and the starter ends up pulling more current than it ... If the battery light turns on while driving, the general recommendation is to stop the vehicle in a safe place as soon as possible, as the battery may be ...