> I have a 1994 Chevy Corsica with a 6 cylinder engine. In recent days a red
> light that is shaped like a battery on the instrument panel has began coming
> off and on intermittently. It comes on for a few seconds to a couple
> minutes, then stays off for a while. When it comes on, my headlights get
> very bright and my heater blower goes very fast. The battery is good. I took
> a voltmeter and measured the voltage at the cigarette lighter socket. When
> the battery-shaped indicator light is off and everything's normal it reads
> 14 volts. When the red battery-shaped light is on it reads 16 volts. The car
> runs fine either way. This happens during both hot and cold operating
> temperatures, light and full electrical load, and there doesn't seem to be a
> pattern. I also hear a faint whining noise coming from somewhere when the
> light is on. I thought the alternator was dirty so I sprayed it with a
> garden hose and Joy dish soap, but that didn't change anything. I thought
> about the voltage regulator, but can't find it. Does anyone know what is
> going on here and if it's okay to continue driving the car? Thank you.
>
>
> Alternators hate joy dish soap. Try dove.