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Lots of things can go wrong. The bearing that is belt driven can fail. It can over, or undercharge your system. The best check is to check it's running voltage - it should be between 13-14.5 volts. Anything less than 12.5 and it's not charging your battery.

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โˆ™ 2006-09-04 02:47:44
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Q: How do you know when the alternator is dead?
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Related questions

How do you know when an alternator goes out on a Toyota Corolla?

the battery will not be recharged and will soon become inoperable or discharged {dead}

Will a dead alternator drain a battery?

Yes. If the alternator is dead and you drive the vehicle, all the power is coming from the battery and it will eventually drain completely. Also, if a diode is shorted inside the alternator, that can drain a battery.

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Charge it, replace it,test the alternator,Charge it, replace it,test the alternator,

Why is your battery not charging when you drive?

dead battery dead alternator dead voltage regulator each needs to be tested.

How do I know if if my car battery or alternator is dead?

Fully charge the battery Check with a voltmeter (should read approx. 12.8 volts without engine running) With engine running and good alternator reading should be 13.8-14.2 if the battery is dead the car wont start. replace the battery (preferably with a new one) run the car and if it dies or wont crank again its the alternator (or possibly the alternator belt is slipping)

Why will a batter not hold a charge when the alternator has been replaced?

Maybe the batter is dead or you got another bad alternator.

What happens if the alternator goes in a car?


What happens when an alternator does not work?

If the alternator has no output then the vehicle's electrical requirements must be supplied by the battery, until dead. In addition, if the alternator quits, the alternator light, located in the instrument cluster, will illuminate

Why does battery go dead when hooked up but alternator is good in geo metro?

check your battery ground and your alternator ground

Can a car still run if the alternator is dead?

Sorry to say,but no. The alternator is the device that replaces the power that has been used from your battery.Without the alternator, the battery will get drained and not be able to recharge.

Why does battery go dead?

Alternator is defective, dead cell in the battery, or something is on pulling power from the battery.

How do you tell if the battery is dead in the Chrysler sebring jxi or if it's the alternator?

if the battery is dead, there will be no ignition lights etc when u turn the key your headlights would be very dim if on at all. the alternator only works when engine is running, so if alternator is dead it will not charge the battery most auto stores will check both battery and alternator for free if you remove from car and take them to the store

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