Generally, alternator output voltage is consider OK if it is in the range between 12 1/2 volts to a maximum of 16 volts.
Therefore, although the output is at the maximum, you do not seem to have a problem.
Usually, if the battery has had a lot of drain, then the alternator output will run at the maximum until the battery is fully charged.
you may have a bad battery or a bad voltage regulator
Most likely the problem is your alternator....the battery light actually does not monitor battery condition, only the charging system. I'd check the voltage regulator and the fuses first. The fuses are the cheapest fix and the voltage regulator will run about 25% less than an alternator.
The battery light comes on when the alternator output voltage is too low or too high. You have a wiring or regulator problem.The battery light comes on when the alternator output voltage is too low or too high. You have a wiring or regulator problem.
I have a 1993 silverado that was doing the same thing, and the problem turned out to be a bad regulator inside my brand new alternator. Ireplaced it and went ahead and replaced the battery, I haven't had the problem since! Hope this helps. I have a 1993 silverado that was doing the same thing, and the problem turned out to be a bad regulator inside my brand new alternator. Ireplaced it and went ahead and replaced the battery, I haven't had the problem since! Hope this helps.
Obviously check the battery. Anyway, if the alternator, battery, and wires connecting them are good the voltage regulator is next on the list.
alternator needs to be replaced. battery also might be a problem due to the alternator not charging it
The battery light comes on when the alternator is either over or under charging. If the alternator tested good you have a wiring or computer problem. The engine computer is the voltage regulator.
Check the voltage regulator.
Sometimes an alternator with a weak diode(s)can test out fine, but can still trigger the light. I believe the problem is in your alternator. Good luck.
I had this problem on my disco 1. Turned out to be the alternator, which was replaced and the problem was fixed.
If you know the alternator is good and wired correctly then take a hard look at the voltage regulator. If the voltage regulator is built into the alternator then look carefully at the battery cables. I would bet your problem is the battery. If it is out of warranty just replace it. A trip to your local Auto Parts store where they can check the entire system, is in order.If you know the alternator is good and wired correctly then take a hard look at the voltage regulator. If the voltage regulator is built into the alternator then look carefully at the battery cables. I would bet your problem is the battery. If it is out of warranty just replace it. A trip to your local Auto Parts store where they can check the entire system, is in order.
There is no problem...the problem was the alternator. You have fixed the problem.