A bad voltage regulator can cause an overcharging condition. Check the wires going to the regulator for corrosion and make sure the regulator has a good ground.
Defective voltage regulator.
Overcharging (bad voltage regulator) or a short circuit inside the battery.
Defective voltage regulator. Some are built into the alternator and some are external.
Does alt. light stay on after car is shut off? If so could be voltage regulator is defective and overcharging battery when running Does light stay on after car is shut off? If so could be a bad voltage regulator--if so may be overcharging battery Check voltage readings at battery should be around 14.2 with car running -- if much higher than this voltage regulator is bad.
Test/replace the voltage regulator. The year, make and model info would help.
No, it will not shut off. Overcharging because the voltage regulator is defective.
I think it is next to the starter solenoid close to the battery.
Undercharging or overcharging the battery are symptoms of a faulty voltage regulator. A typical 12 volt automotive system, engine running at idle, all accessories turned off, should read 14.2 volts at battery connections.
Voltage regulator is inside the rear of the alternator Vehicle will start and run until battery either goes dead (open regulator) or burns up (constantly closed regulator) due to overcharging
Defective voltage regulator, which is built into the alternator. Have the alternator tested. Most auto parts store will do this for free.
Voltage regulator in the alternator is malfunctioning
Defective voltage regulator. Check the voltage at the battery with the engine running with a digital volt meter. You should get 13.5 to 15.5 volts. Any more and the alternator is overcharging and needs replacing because in almost all cases the regulator is built into the alternator.