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Most likely it will not be the alternator. It sounds as though the alternator is working very well. It will be a faulty battery or a battery drain due to something left on or shorted out. Usually a boot light or glovebox light or recently fitted stereo.

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โˆ™ 2005-08-02 10:16:47
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Q: Is it the alternator if the car starts then after 10 hours the battery goes dead and does not start but after running for a few minutes starts again?
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Is alternator used once car starts?

The battery "starts" the car...after that the alternator keeps the battery charged. They work together in other words.

Why don't car batteries run out of charges after a few starts?

Because the alternator keeps the battery charged when the car is running.

4-cylinder 99 tercel starts the stalls starts again and stalls then the battery is dead?

It sounds like your alternator is no longer recharging your battery. You probably need a new alternator.

Will a bad alternator keep a 1999 S10 pickup truck from starting?

The answer is no . The battery starts you vehicle , the alternator charges the battery so if your alternator is bad your battery is not receiving a charge which will cause a "no start" condition.

Why would a car with a new battery not start and once you give the battery a jump it starts it's a 1999 Mercedes c230?

probably has a bad alternator. With the car running use a digital multimeter an you should have 13 + volts (as high as 14.5+) at the battery terminals if the alternator is working. If only 12 volts or so then check the alternator.

Will car start if alternator is dead?

Yes, the battery starts the engine, and as long as the battery is fully charged the engine will start. The battery will loose it's charge if the alternator is defective and not replenishing the charge of the battery but the alternator has nothing to do with starting the engine.


to run your lights and accessories and maintain your battery between starts.

Why would a 1998 villager starts and died then have no power at all?

Blown fusable link?Bad ground cable?Bad alternator - vehicle running off battery and battery drained of all power?

Why does myCar battery starts for about 3 days then goes dead?

Alternator is weak and needs replacing. Drive belt on alternator can also be slipping due to being loose. Check the alternator output at the battery with the engine running. It should read from 13.5-16 volts DC. Any less and it needs replacing.

If the engine doesn't turn over on a 91 olds cutlass calais how do you know if it is a starter of alternator problem?

AnswerIf the battery's dead it could be the alternator or a bad battery. If not, the starter. Try jumping it. If it starts the starter's OK. Then investigate the alternator and battery.Does it turn over but not start..?? There is a difference. Doesn't turn over would most likely be the battery, which is typically followed by a clicking noise. That would be the starter solenoid trying to engage but the battery doesn't have enough power to do so.If jumping it starts it right up, let it run for 10 or 15 minutes then (while running) check the voltage at the battery terminals. If it's above 14 volts, the alternator is doing it's job and the battery is dead. If the voltage is less than 14, then the alternator needs to be replaced.

On a 97 cavalier after replacing the alternator and battery the battery light is still on and though it starts and runs fine what is causing the battery light to come on again after start?


My '91Mazda 323 dies while driving It starts fine with a boost but dies soon after Help?

Probably need an alternator. Check your battery voltage with a multimeter, without the car running it should be around 12.5 volts with engine off. Start the car & check the battery voltage and if the alternator is charging properly it should be 13.5 or better at the battery. If not check the power terminal at the alternator itself and if only battery voltage (12 or so volts, same as battery) is there then the alternator is not charging.

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