when you replace the alternater you need to replace the battery There is a moderate rate of defective new or rebuilt alternators and voltage regulators. This can be as much as on in 20 to one in 15. I mention voltage regulators because often later cars have the voltage regulator built into the alternator. I replaced a bum alternator with a rebuilt one, only to find that a week later my battery was low. I replaced the old battery, and all was well for three weeks, when my new battery ran down. Monitoring the battery voltage when the car was running told the tale. The alternator/regulator was only holding the battery up at 13.2V while idling, not the 14V minimum that the service manual specified. Back to the shop for another unit!
The computer only resets when the battery is removed. The alternator just charges the battery, so if the battery is left connected when the alternator is replaced, the computer should not reset.
did you check the alternator??
Inside the alternator
Check the battery cables or starter.
Alternator is not charging. Have it tested and/or replaced.
Voltage regulator or loose wire.
The battery light coming on in your Town and Country minivan means that the alternator needs to be replaced. The alternator charges the battery and if it goes bad it will not charge the battery.
It could be an alternator. Check with a mechanic if that is the issue.
alternator needs to be replaced. battery also might be a problem due to the alternator not charging it
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
You can have the alternator tested free of charge at just about any major auto parts store. By the way, a bad alternator will not "discharge" a battery - the alternator's function is to provide the charge to the battery. If the alternator is faulty, then it is not providing the charge necessary to keep other components from discharging the battery. I had the alternator tested and it was charging. If the alternator has a bad diode, it will discharge the battery. I replaced the alternator and everything is fine.
Your belt is correctly tensioned?
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.
you have a short where negative is touching the metal of the car or it is grounded inproperly
A light is on or a relay is stuck pulling power from the battery.
No, the battery may be defective and the alternator may be just fine or vice versa. Saying that if the alternator was overcharging the battery it may very well have destroyed a good battery. Just have the battery checked at any auto parts store.
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alternator belt. If the battery and alt test ok than check the connections to the alternator and battery. The alternator should have 2 connections.
You need to replaced the starter or the alternator.
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alt belt.
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
Loose alternator drive belt or loose or corroded battery cables. The battery itself may also be bad.
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.