How much does an alternator cost?

Last Update: April 20, 2022

This is a question our experts keep getting from time to time. Now, we have got the complete detailed explanation and answer for everyone, who is interested!

Asked by: Jordy Kohler
Score: 4.4/5 (64 votes)

How much does an alternator cost depends on the type of vehicle. In some models, they can run as low as $180 and for premium vehicles, they can run over $1,000. The average cost is approximately $500.

How much should it cost to replace an alternator?

When your car starts having electrical problems, it's a sign you need an alternator replacement. Considering the price of a new alternator as well as labor, you should expect to spend anywhere between $500 and $1,000 to get a new one for your vehicle.

What are the signs of a bad alternator?

7 Signs of a Failing Alternator
  • Dim or Overly Bright Lights. ...
  • Dead Battery. ...
  • Slow or Malfunctioning Accessories. ...
  • Trouble Starting or Frequent Stalling. ...
  • Growling or Whining Noises. ...
  • Smell of Burning Rubber or Wires. ...
  • Battery Warning Light on Dash.

Can you drive a car with a bad alternator?

If the alternator is going or has gone bad, in most cases the vehicle can be driven for a short distance and for a short period of time, allowing you to make it to a service station or automotive parts store for a replacement alternator.

Is it worth buying a new alternator?

This is also sometimes called "remanning" and is where you open that puppy up and replace any defective or worn out parts inside the alternator and then spit shine everything before you close it back up. Rebuilding an alternator is definitely worth the time and is very cost effective.

How Much Does An Alternator Replacement Cost? (Talk To My Mechanic)

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What causes an alternator to fail?

Alternators have a number of moving parts, so as they get dirty and are subjected to extreme temperatures, those internal components can wear out, causing the alternator to go bad. One of the most common problems you're likely to experience with an alternator is a failure in the bearings.

Can a bad alternator destroy a new battery?

Can a bad alternator kill a new battery? Yes, very easily. A failing alternator can overcharge, which will damage the battery. An undercharging alternator will leave the battery flat, which speeds up its failure.

How far can I drive without an alternator?

If the alternator output was weak for a long time before it failed, the car may not go very far. If you have a fully charged high capacity battery, you could drive a hundred miles at least in the day-time, on the battery alone.

What happens if my alternator goes out while driving?

If your alternator goes out – your car isn't going anywhere fast. Because your alternator charges your car's battery, without it, you won't be able to start your car, which means you'll need a tow to the mechanic. When you have a dead alternator, your battery will also die during normal use. ... A dead battery again.

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.

How do I check my car alternator?

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  1. Get a multimeter.
  2. Set your multimeter to DCV (DC Volts) above 15.
  3. Make sure your alternator's positive and negative terminals are clean.
  4. Put the multimeter's black cable to the negative terminal and the red cable to the positive terminal.
  5. Look for an ideal alternator reading of around 12.6.

What sound does a bad alternator make?

Whining and Grinding Sounds

If your alternator is failing, you could hear a few abnormal noises. If you hear a small rattling or grinding sound when your engine is running, this could be caused by a loose bearing in your alternator.

How do I check for a bad alternator?

An illuminated dashboard light can indicate a problem with an automobile charging system. 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.

Can I replace alternator myself?

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 do you tell if it's your battery or alternator?

If your engine won't turn over or takes far longer than usual, it's time to grab the jumper cables and attempt a jump-start. If your engine starts and stays running but won't start again later, it's likely a battery problem. If your vehicle immediately stalls, it's probably a bad alternator.

Can AutoZone change an alternator?

You can bring the vehicle to AutoZone and have the alternator tested on the vehicle to ensure the charging system is performing correctly. ... For the best prices on name-brand alternators, affordable hand tools, and precision replacement parts, visit your local AutoZone.

Does AutoZone do alternator testing?

Every AutoZone in the USA will check your alternator, starter, or battery at no charge.

Can you drive a car without an alternator belt?

The short answer is yes, your car will start even if the serpentine belt is broken or missing. To get the car going, the battery sends power to your starter motor. ... However, you do need your serpentine belt if you want the car to run for longer than a few minutes.

How can I start my car without alternator?

How To Jumpstart A Car With A Bad Alternator
  1. Find Someone with a Good Battery. You can't jumpstart a dead battery without a fully-charged option at your fingertips. ...
  2. Let It Run. Before the jumpstart begins, you'll want to run the other engine for 3 to 4 minutes. ...
  3. Turn Accessories Off. ...
  4. Get Thee to a Mechanic. ...
  5. Use a Jumper Pack.

How long does it take to charge an alternator?

It's possible to charge a flat battery to 80 percent full in about 2 hours if you have a good alternator.

Can jumpstarting a car damage the alternator?

Any battery or alternator issues that affect power quality will be transmitted to your car. However, it is still possible to suffer damage to your car from jumping someone elses. ...

What kills the alternator?

Running in full charge mode continuously can kill an alternator, so trying to have your new alternator try and charge your dead battery can result in immediate alternator failure.

What will happen if alternator gets wet?

If you submerge the alternator, it will work. The electrical components of your alternator are sealed. ... 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.

Which cable do you disconnect to check alternator?

If you're tempted to test an alternator by disconnecting the negative battery cable, don't do it. A good alternator may indeed keep the engine running without the negative cable, but this was never a good test. In the pre-computer days, you could pull it off without damaging anything.