Quick Answer: Is It Worth Rebuilding An Alternator?

Is it worth buying a used alternator?

There’s nothing wrong with buying used as long as it has some type of warranty, the price of a used one is significantly less than new or reman, you don’t plan on keeping the vehicle a long time, and the alternator isn’t difficult to change for some reason (it’s a pretty easy job on most vehicles)..

What causes an alternator to fail?

Bad diodes are a common cause of alternator failure. The diodes are part of the rectifier assembly that converts the alternator’s AC output to DC. … A leaky diode also can allow current to drain out of the battery through the alternator when the vehicle is not being driven.

Is a rebuilt engine good as new?

Frequently, rebuilt engines are superior to even new car engines because better parts are used, or design changes in parts correct problems with the original engine. Rebuilt engines are dependable, reliable and are backed by the engine manufacturers warranty program.

Should I get an alternator from a junkyard?

If you only want to keep the car for less than a year, take a chance with the junkyard alternator. On the other hand, if you hope to drive it for a few more years, go for the rebuilt, make sure it has a warranty. … Bottom line, you can do well with a junkyard replacement, but overall a rebuilt will be more dependable.

Do alternators fail suddenly?

The alternator is a key component in running the electrical systems in your car. … When your alternator begins to fail it can cause a variety of different electrical problems in your car, and eventually cause a breakdown. Alternators can go bad suddenly, or slowly over time.

Is it cheaper to rebuild an alternator?

Rebuilt alternators can be up to 25 percent cheaper than buying a new alternator. … One problem is that good quality in a rebuilt alternator means more money—the cheaper the rebuild, the more likely that the alternator will break again. As a result, it might be more cost-effective to simply purchase a new alternator.

How long should a rebuilt alternator last?

about seven yearsThe battery’s job is to start the car, and the alternator keeps it running.” Gunning says an alternator typically lasts about seven years, or about 100,000 to 150,000 miles, adds Waits. Some mechanics, though, say they typically see alternators last about 80,000 miles.

How does a car act when the alternator is going out?

Your alternator provides the power to your headlights. One of the most common symptoms of a failing alternator is flickering, pulsating, or dimmed headlights. If your alternator is beginning to fail it won’t be able to power your headlights effectively.

How far can I drive with a bad alternator?

Starting with a fully charged battery you will probably get 100 Miles before it wears down too far. It also depends greatly on not running headlights or running lights. If you have a car that always runs with the headlights on, and if your battery is several years old, 50 miles might be a better estimate.

How do I know if my alternator is bad?

However, a very simple way to check if the alternator is working is to run the car and disconnect the positive terminal of the battery. If the vehicle stops running, then you probably have a bad alternator. You can also examine your interior and dashboard lights.

What are the symptoms of a bad alternator?

6 Symptoms of a Failing AlternatorThe indicator light. … Headlights are dim or flickering. … Other electrical failures. … Strange noises. … Car stalls or has difficulty starting. … Battery dies.

Can you refurbish an alternator?

Repairing a Defective Alternator You can either repair it yourself or take it to a repair shop. … This auto repair pretty much just requires that you disconnect the battery, remove the serpentine belt, then unbolt the alternator and remove the wiring connectors. Then just do everything in reverse to re-install it.

Should I buy a new or rebuilt alternator?

New: A new starter or alternator provides you with a working system where all parts are at the same stage of wear and tear, but it’s often the most expensive option. … A rebuilt system won’t have all its parts at the same state of wear and tear, but it’s an affordable alternative to buying a new alternator or starter.