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Do batteries have to be replaced simultaneously with alternators. I replaced my alternator but was told it likely damaged the old battery so I'll need to replace it. True?
Wiki User
∙ 13y ago
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.
Wiki User
∙ 13y ago
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Alternator is over charging how do you fix it?
It depends on the year of the vehicle. Newer (late 60s/early 70s on) had "internal regulator alternators", so the alternator needs to be replaced. Older cars have a regulator, usually mounted on a fender well, the fire wall, or the radiator support which canb be replaced independently of the alternator.
Why wont your 2000 ford explorer alternator charge even after replaced by a new one?
Some new alternators will not charge unless the battery has a full charge already.
Why does your alternator go out often in a ford excursion?
I have an '01 diesel Excursion. I go through batteries about 1x per year, but only replaced my alternator 1x in 6 years.
Why would an alternator charge too much?
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.
What would couse an alternator to over charge a battery on a 93 Chevy berreta gt 3 alternators later and 5 batteries sits over night and drans batter help?
the normal cause of a batterie draining at night is that it has a short and is grounding somewhere use a test light to find the short. as for an over charge that would be caused by the voltage regulator it may need replaced.
What will cause a 1993 mitsubushi eclipse's battery to drain even after you replaced the alternator with a new one?
If you have checked the battery and made sure that the new alternator is working, the only other possibility is that something is staying on when the ignition is off. Not all new alternators are perfect, sometimes they come with a faulty component that can drain the battery. Also, older batteries can slowly drain if the plates are starting to fail. It's difficult to just give one solution to a problem with so many possibilities.
How much do alternators cost mercury cougars?
I just replaced the alternator in my 2000 Mercury Cougar and with the labour, belt, idler, alternator and tensioner it was roughly $700 Canadian!!If it wasn't such a good car i would have though twice about fixing it but I've never felt safer in any other vehicle besides the Coug!
What has happened to the electricity if the battery cables were not disconnected before the alternator was replaced?
batteries are stored energy, nothing should have happened. They say to disconnect the negative terminal for safety reasons.
Why is a generator of a car is called an alternator?
Generators were used in vehicles up to the mid 1960's. They used dc voltage and were slow to replenish batteries. You had to drive approx. 7 miles at 30 mph or faster just to recharge battery to level prior to starting vehicle. Alternators replaced generators in the late 1960's. Alternator use ac voltage to recharge battery and will charge battery at vehicle idle. Much faster and more efficient than the generator. It is not unusual for an alternator to last the life of a vehicle where a generator would require a rebuild or replacement during the life of vehicle.
Why does your battery smell like rotten eggs?
If an automobile battery is in normal condition, there should be very little smell from it. The one smell that you should be aware of is the smell of rotten eggs, which indicates severe and dangerous problems with the battery. Once a battery begins to smell like rotten eggs, it cannot be saved, but must be immediately replaced. Please be aware that rotten-egg batteries can explode. Rotten-egg batteries are frequently much hotter than normal batteries would be, and the hot rotten-egg batteries are the most dangerous. The most common cause of rotten-egg batteries is an alternator which constantly overcharges, so the alternator should usually be replaced along with the battery.
Can an internal voltage regulator be replaced on a 1996 jeep grand Cherokee or does the alternator have to be replaced?
The regulator is in the engine computer not the alternator.
How do you fix car alternator?
IF you have to ask this question, then the answer has to be, "You can't fix it.!" Modern alternators are precision electromechanical devices, which require specialized tools, test equipment, and knowledge in order to repair [actually, while opened up, it is best to do a total rebuild]. It would be much easier, and probably much less expensive, to simply trade in your old alternator on a remanufactured one. A word of caution, alternators are expensive, and you should be certain that it is defective BEFORE you replace or attempt to repair it. I cannot even begin to recall the number of people [including me] who replaced a suspected defective [but perfectly good] alternator only to find out that something else was the cause of the failure to charge problem. Go to a major chain auto parts store and have your charging system and battery tested [all done simultaneously] usually for FREE. Make sure the alternator is truly defective before replacing or attempting repair.
