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Two weeks after you have your alternator replaced why would the battery light come on then the anti-lock brakes and seatbelt lights?
Wiki User
∙ 19y ago
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!
Wiki User
∙ 19y ago
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Does a computer reset after an alternator is replaced?
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.
You just replaced the battery in a 99 cirrus but the battery light stays on?
did you check the alternator??
What could be wrong if i replaced the alternator and battery and still wont hold a charge?
Inside the alternator
Why alternator will not charge battery on 2005 ford focus... New alternator new battery replaced already?
Voltage regulator or loose wire.
Why would your car not start if you just replaced the battery and alternator?
Check the battery cables or starter.
Why does battery light on in Chevy Malibu?
Alternator is not charging. Have it tested and/or replaced.
How can I test my alternator to see if it is discharging my battery?
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.
1990 ford f150 replaced alternator good battery can not keep a charge any ideas?
defective alternator
Why is Chevrolet Cavalier not charging?
alternator needs to be replaced. battery also might be a problem due to the alternator not charging it
My Toyota Corolla had a battery replaced but the battery light is still on?
It could be an alternator. Check with a mechanic if that is the issue.
You have replaced your starter alternator battery and battery cables on your Saturn why is it still losing power?
Voltage Regulator?
What does the battery light on mean in your town and country minivan?
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.
