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Alternators have two parts, one is the armature that generates electricity and the other is a voltage regulator. In most cars the typical output for an alternator is 13.2 to 14.4 volts. If their is more or less than this being produced, the voltage regulator may be faulty or the bushes may be worn.

another issue that some alternators have is the failure of the bearings inside the alternator leading to noisy running or the bearings inside the freewheeling pulley fitted to more and more modern alternators. these can often be replaced independently.

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โˆ™ 2012-08-28 20:57:55
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Q: Why would an alternator charge too much?
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Related questions

How much time does it take a car alternator to charge a battery?

It varies depending on how much other electronics you are using on the vehicle at the time. Could take hours. I do not recommend you charge any dead battery with the alternator if you can avoid it. it puts too much of a strain on the alternator and may damage it. Charge a dead battery with a battery charger.


How much alternator over charge is too much?

15.0 volts is maximum for most systems some batteries will not stand even that much. have battery tested as a bad battery can fool an alternator into overcharging, check all connections and be sure that they are clean and tight.


How much charge should the alternator on a 1992 grand prix put out?

Anything below 13 would not be holding enough charge but anything over 16 too much. So between 16 and 13. If you are at a smack dab 18 than it is over charging your battery. Hope this helps! I have a 93 Grand Prix


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take it to a mechanic!!!! would cost too much to do it yourself, and if you messed it up.....


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Yes, if the voltage level is too low to start the car.


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Traffic law attorneys charge too much for their service.


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Why would your battery light stay on after you have put in a new battery and 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.


Is 15 volts too much from the alternator?

That depends on the application [use] of the alternator. For automotive applications, NO, 15 Volts DC is not too much. Generally, an acceptable voltage output range for automotive applications is 13 Volts minimum to 16 volts maximum.


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You may need a new one. It might not be capable of charging as well as it used too.


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Yes, once you have jump started the car (from another car's battery), driving the car will recharge the dead battery (provided the battery is OK). This is a terrible idea and may damage the alternator. Drive the car immediately home and charge the battery with a battery charger. Alternators are designed to keep a charged battery fully charged. They are not designed to charge a dead battery. This puts way too much strain on the alternator circuits.


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