Are Rebuilt Alternators Any Good?

Is it OK to buy a remanufactured alternator?

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.

Remanufactured: A remanufactured starter or alternator has all parts re-machined or replaced compared to the ones that didn’t work..

What causes the 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.

Can Autozone replace an alternator?

No, they don’t replace them for you. However, if you need yours tested, and can remove it yourself and bring it in, they will test it. Depending on the vehicle, changing the alternator may be pretty quick and simple.

What kills the alternator?

A worn or damaged drive belt can slip on the alternator’s pulley wheel, causing the unit to put out a reduced voltage. … A slipping belt can make the alternator undercharge the system, which will eventually kill the battery and damage the alternator.

Who makes the best high output alternator?

Best High Output Alternator#1.Powermaster 48237 High Output Alternator.#2.ACDelco 335-1086 High Output Alternator.#3.LActrical High Output Alternator.#4.Eagle High High Output Alternator.#5.Parts Player High Output Alternator.

How long do alternators 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, says Waits.

Are BBB alternators any good?

They say the BBB alternators at Napa are very good quality and have a very low failure rate. They are rebuilt in Mexico with lower-wage-earning employees. It says that right on the BBB website.

What are the signs your alternator is going out?

Signs of a Bad Alternator Some of the things to look for are no-starting and trouble starting, dimming lights and problems with stereo system output. If your car starts but stalls when you’re underway, your battery is probably not being recharged due to a faulty alternator.

How much does a reconditioned alternator cost?

Depending on the location of the alternator, and if other components need to be removed to allow access to the alternator, it can cost between $400 – $900+ to have it replaced.

What will happen if alternator gets wet?

When they get wet, this lubrication wears away. The brushes then get damaged by the electrical arc and wear out. Repeated exposure to water can also cause these brushes to rust which can cause them to come out of contact with the slip rings. The other issue you’ll run into with a flooded alternator is grime.

Can I spray wd40 in my alternator?

A good way to ruin and/or shorten the life of an alternator is to spray liquids into it. Wd-40, electrical contact cleaner, etc would work its way into places it doesn’t belong (ie bearings, slip-rings, etc). The compressed air route may be ok, but just be careful.

How long can a car run without alternator?

It entirely depends on the capacity of the car battery. If the battery does not have a full charge, the vehicle may run from 5 to 30 minutes. The runtime will increase in case of a fully charged battery.

How long will a new battery last with a bad alternator?

In this situation, the battery could last as little as 30 minutes. If you are lucky and could get up to two hours. Note: In case you have to start the car without an alternator, don’t turn off the engine once you’re going.

How hard is it to replace an alternator?

Replacing an alternator can cost you several hundred bucks at the local repair shop, but it’s one of the simplest repairs you can do at home. With a few tools and about an hour you can swap it out yourself — and keep your dough in your pocket where it belongs.

How long do rebuilt alternators last?

The 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.

Do alternators go out suddenly?

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.

What happens if alternator dies while driving?

The alternator generates power from the engine to run the electric parts of a car. If your alternator dies while driving, you may just stop and be stranded, but a bad battery can also give you problems at low speeds.

Can a bad alternator destroy a new battery?

A bad alternator will cause a battery to lose its power because an alternator charges the battery while a car is running so that all your electrical systems on the car will work. It can if you let the new battery run down. … Also allows battery current to drain when the car is shut off.

Who makes the best rebuilt alternators?

The Best AlternatorDB Electrical Alternator. See More Reviews. … DB Electrical AND0273 Alternator. See More Reviews. … Denso Remanufactured Alternator. See More Reviews. … Bosch New Alternator. See More Reviews. … DB Electrical Abo0224 Alternator. See More Reviews. … ACDelco Professional Alternator. See More Reviews.

Can you drive with a bad alternator?

In short – yes, but It’s not recommended to DRIVE a car with a bad alternator, here’s why: Your car’s alternator is the main power feed for the car’s electrical system when the engine is running, the battery is only designed to be used as a power source to start the engine.

Do I need a new battery after replacing alternator?

If your alternator has been replaced and the battery is discharged, your mechanic can re-test the battery after it has been fully recharged. Usually, it takes 20-40 minutes of running the engine or driving to recharge a good battery.