you may have a bad battery or a bad voltage regulator
alternator needs to be replaced. battery also might be a problem due to the alternator not charging it
Alternator is not charging. Have it tested and/or replaced.
Your belt is correctly tensioned?
94 Buick Lesabre replaced battery and alternator and the alternator is not charging the battery. Battery light is on and off. Is this fusable link. If so where is it located
alternator. go to a parts store and have them test the charging system. must will do that for free
check the alternator. Use a digital multimeter and with engine running you should have 13-14 volts at the battery. If less than 12.5 Alternator is not charging Also check the amperage the alternator is putting out.
It means something is wrong with your charging system. Can be a loose of corroded battery cable, defective alternator or a battery with a dead short.
Could be a bad signal sent by the computer or the alternator is not charging to full capacity. Have someone check the charging amps on the alternator.
The battery light can come on due to a low charging voltage. Check the alternator for full output, and make sure that the alternator belt is not slipping.
could be the alternator or starter sounds like the alternator if the battery is gone flat get the alternator tested at auto parts or garage jump charging the battery might get you out of trouble for a bit
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alt belt.
This is not a battery problem. Your charging system, the alternator, is not putting out enough juice to charge the battery until you reach 4000 rpm. Have the alternator and charging system checked.