How much should it cost to replace an alternator?

Thurman Roys asked, updated on June 20th, 2022; Topic: how to replace an alternator
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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.

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Without doubt, can you drive a car with a bad alternator?

There probably won't be any damage to the donor or recipient's car if you are jump-starting correctly and is generally safe to do, but driving a car with a bad alternator poses a risk, especially if you have a newer car. The alternator powers everything in your car, including the lights, AC, radio, and so on.

In spite of everything, how do I check my car alternator?

Either, how do you tell if it's my battery or alternator?

If the engine starts but dies immediately, your alternator probably isn't keeping your battery charged. If a jump starts and keeps your car running, but the car can't start again off of its own power, a dead battery is likely your answer.

Will a bad alternator make your car shut off?

Engine Stalling A faulty or dying alternator may only work in fits and starts. As a result, the alternator may not have what it takes to keep your battery fully charged β€” even with your engine running. As a result, you may find your car stalling out at odd times.

8 Related Questions Answered

What does a dead alternator sound like?

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. Conversely, if you hear a constant high whine while you are driving, this is usually a sign that your alternator is failing to distribute the necessary power throughout your vehicle.

How long should an alternator last in a car?

An alternator should last between 80,000 to 150,000 miles, which usually means around 7-10 years. However, if your vehicle is driven hard around Venice or Bradenton, your alternator may need to be replaced sooner.

What happens if your 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.

How can I test my alternator at home?

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  • Get a multimeter.
  • Set your multimeter to DCV (DC Volts) above 15.
  • Make sure your alternator's positive and negative terminals are clean.
  • Put the multimeter's black cable to the negative terminal and the red cable to the positive terminal.
  • Look for an ideal alternator reading of around 12.6.
  • Can AutoZone check my alternator?

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

    Can a bad alternator cause a battery drain?

    A corroded or defective alternator diode will faultily continue charging the circuit even when the car off. This, in turn, will drain your car battery and cause the car not to start.

    Does a bad battery affect alternator?

    Originally Answered: Does a bad battery affect an alternator? Yes, usually… depending on how the battery is faulty it can cause the alternator to work extra hard all the time or it can cause it to have to turn on and off a lot more then normal.

    How long will a bad alternator 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 β€” or about 100,000 to 150,000 miles, says Waits.