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Impossible to answer as it depends on use and abuse. Normal use will see no need to replace one on a modern car.

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14y ago
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Q: How long should the alternator on your car last?
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Automotive Alternators ?

form_title= Automotive Alternators form_header= Ensure you car will run with an alternator. How old is your current alternator?*= _ [50] How long have you owned your vehicle?*= _ [50] When was the last time you had you car in for a tune-up?*= _ [50]


How long would a battery last with a bad alternator?

It depends on just how 'bad' the alternator is, but generally, not very long. You can actually drive your car until there is not enough electrical charge to spark across the spark plugs, and your car just stops, unable to start again.


Will a car battery recharge if the car is on but not moving?

yes the engine runs the charger/alternator as long as the engine is running the battery should be chargeing


Does the alternator run when you have the car started and in park?

Yes, as long as the engine is running, so is the alternator. The alternator is actually what keeps the car battery charged.


How long does a car battery last if the car is seldom used?

As long as the battery is kept charged then it should last 3-5 years.


How long should brakes last on a new car?

depends how long you use them


Your 1997 Mazda 626 will not start after an alternator malfunction why?

Battery will be flat because spark plugs were running straight off your battery because the alternator was not charging your battery as you were driving. You can test this by jump starting your car with another car and after your car is running you should be able to disconnect your battery and car should still run off the alternator. If your car stops than your alternator is RS. Battery will be flat because spark plugs were running straight off your battery because the alternator was not charging your battery as you were driving. You can test this by jump starting your car with another car and after your car is running you should be able to disconnect your battery and car should still run off the alternator. If your car stops than your alternator is RS.


How lon should a muuffler last on a car?

for a very long time


How long should a car battery last on a 2007 Toyota Camry?

Car batteries last four to five years on average.


Will a car start with a faulty alternator?

As long as the battery is charged


How long do you run your car after a a car jump?

I assume you mean how long to charge the battery. You should never let the alternator charge a dead battery if possible. The alternator is designed to keep the battery charged but not to charge a dead battery. You put a strain on the alternator and it can cause a diode to burn out. Drive home and then put a battery charger on the battery to fully charge it.


How do you charge a battery still in the car without damaging the alternator?

As long as the ignition switch is off, it will not damage the alternator.