Fully charge the battery and have it load tested at anyplace that sells batteries.
Obviously check the battery. Anyway, if the alternator, battery, and wires connecting them are good the voltage regulator is next on the list.
There is something wrong with the charging system. Check the alternator and the battery to see if both are still good. Good Luck!
The Alternator might be bad. Make sure the battery terminals are clean, and the wires are good. If you still have a problem check the fuses.
Check the wire from the battery to the body and from the battery/body to the engine block.
have the battery tested, average life of a battery is 2 to 3 years. if battery is good check voltage regulator and starter motor. there is a short somewhere if the battery is good
battery and or alternator are shot, check alternator by starting the car, and removing either the positive or negative battery cable,,, if the vehicle continues to run the alternator is good.
it tells you that either the battery, or alternater is not putting out the proper voltage to care for vehicle needs. check the alt, if ok. check the battery and cables. if engine is off there should be at least 12.6 at the battery, when running if alt, is ok. there will be 13.5 to 14.5. take negative battery cable off while running. if it stays running the alt, is good. if the engine dies its bad. if the alt, proves to be good and you are still having problems, then check for a bad battery.
It could be an alternator. Check with a mechanic if that is the issue.
battery tests good, alternator tests good, new voltage regulator installed and still no charge to battery from altanator .
first check the battery. if the eye is black the battery needs changed. check the fuses. maybe one blew from the main power source. check the alternator and starter to be sure they are still good. take the car to a mechanic. its the best way
If the battery turns the engine over as it should then the battery is good.
If the alternator is good then the battery is bad.