
What is the average cost of replacing an alternator?
The amount you will have to pay for a new alternator really depends on the model and make of your car. However, the average cost of a new alternator is between $180 and $650, while the actual repair work, including labor, typically amounts to $400 to $600. For best results, opt for a new alternator or get one that’s built by the manufacturer.
How long does it take to replace an alternator?
The make and model of your vehicle will determine the exact time it takes to replace the alternator, but usually, one to two hours is sufficient. Thus if you have the same engine, you should be ok.
How much to replace an alternator?
How Much Does Alternator Replacement Cost. The amount you will have to pay for a new alternator really depends on the model and make of your car. However, the average cost of a new alternator is between $180 and $650, while the actual repair work, including labor, typically amounts to $400 to $600. For best results, opt for a new alternator or get one that’s built by the manufacturer.
Can a car run without the alternator installed?
The alternator can drain a battery over time and shorten its lifespan, and you don’t want to unnecessarily run through batteries on account of a bad alternator. Basically, your battery gets the engine going, but once it’s on, the alternator takes over and can, in theory, continue running the car without the battery’s help.

How much does it cost for an alternator?
It usually takes two to three hours to replace an alternator. Depending on the mechanic's hourly fee, that's about $200 in labor costs. If you use OEM parts, you can expect to pay between $200 and $350 for a new alternator. If you don't mind using aftermarket parts, you could pay between $100 to $200 for a new part.
Is it worth fixing the alternator?
It's usually a better idea to replace the alternator entirely if it is malfunctioning. While new ones can be spendy, they are usually a better choice than remanufactured or rebuilt options. Those probably won't last as long as a new one since the mechanical parts have miles on them already.
What are the signs of a failing alternator?
7 Signs of a Failing AlternatorDim 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.
Is a new alternator expensive?
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 happens if I don't replace alternator?
If these plates fail one at a time, the alternator weakens but manages to generate sufficient power output. When the plates fail, the power will drop power levels. This wear and tear ultimately causes the battery to fail and the ignition system to die.
Can an alternator be repaired?
Alternator reconditioning is when an old, faulty alternator is repaired by replacing any parts of it that aren't working properly. If you need an alternator replacement, you can buy a reconditioned alternator instead of a new one to save money. However, it's riskier.
How can I temporarily fix my alternator?
2:554:34How to Fix a Dying Alternator for Free - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd you want to tap it now in my case I'll hear the car lower the idle the RPMs will go down once IMoreAnd you want to tap it now in my case I'll hear the car lower the idle the RPMs will go down once I take and hit it and it actually starts running again but we'll see if it. Works.
How long will a rebuilt alternator last?
When people have their car alternator replaced, the expectation is that the repair will last at least as long as the expected life of the new alternator, four to five years or anywhere from 50,000 to 100,000 miles.
Why does my alternator make a whining sound?
As stated previously, your alternator runs off a belt that’s connected to the crankshaft. If you begin to notice a whining or growling sound coming from under the hood, it signals there might be an issue with the system. These include a damaged or misaligned belt or worn bearings.
Why is an alternator important?
Instead, they need electricity, which is why the alternator is so crucial. You might think your battery handles this, but in truth, it’s only in charge of getting your car started in the first place. This means that the battery starts the engine, and the alternator keeps it going.
How does an alternator work?
How An Alternator Works. Simply put, an alternator converts mechanical energy, which is made by your engine, into electrical energy. Components like your AC, power steering, power windows, and radio, can’t run on mechanical energy. Instead, they need electricity, which is why the alternator is so crucial.
What does 12.2 mean on a car battery?
12.6V is the magic number, it should not drop far below this range. Anything below 12.2 means your battery is only half-charged. If it is far above, then there is a problem that may lead to a blown alternator or battery. If it is low, unhook the battery from the car and attach it to a charger.
How much does it cost to fix an alternator?
How much do alternator repairs cost? It depends if a repair is possible. If not, you’ll have to have it replaced, which can run between $500 to $1,000 (including parts and labor). Otherwise, for something simple like replacing an alternator belt, expect to pay about $100-$150 (not including diagnosis).
How much does a multimeter cost?
These can run for anywhere between $15 for a basic multimeter or as much as $100 for one with more functions. For this test, an entry-level unit will suffice just fine.
How does a diode work?
The diode assembly receives that electricity and converts it from AC (alternating current) to DC (direct current). This is then directed outwards to power the various components of your vehicle.
What Is an Alternator?
Your alternator is a key component of your car. Not only does it power your vehicle while it’s running; it also ensures your battery recharges when the engine is off. Everything from your headlights to your air conditioning to your power seats to your turn signals require an alternator to work.
Signs of a Bad Alternator
There are several things you may notice if your alternator is failing. Your headlights and dashboard lights may look dim. The car might not readily start, or it might stall. If you use accessory mode, you may notice things don’t work as expected, such as power seats and windows operating unusually slow.
How Much Does It Cost to Replace an Alternator?
The cost of an alternator varies between cars. While there are more affordable options that will work in some cars, budget for around $350. Note that you may need to have other parts, such as the serpentine belt, replaced at the same time. This would add $50 or so to the total cost.
Nicole Wakelin View All
Nicole Wakelin covers the automotive industry as a freelance journalist for a variety of outlets. Her work includes news pieces, podcasts, radio, written reviews, and video reviews.
How to check alternator belt?
How To Test An Alternator? 1 With your car’s engine on, open the hood of your vehicle so you can see and get access to the battery easily. From there, locate your alternator belt to ensure that it simply has not become loose. 2 Use a multimeter on a 20 volt setting to test the voltage of the alternator. Ideally, whilst ensuring your safety, put the positive or red probe onto the red terminal connector that is coming out of the alternative. Next, place the black or negative probe from the multimeter and attach it to a metal part of your car frame – a simple bolt will do. Ensure not to ground the alternator itself. 3 A reading should come up on your meter. If your alternator is in tip top working condition, it should read in the range of 13.8 to 14.2 volts. If it is too high, which is around 15 volts, it means that your alternator is not working properly. The same could be said for if it is too low, but this can be for a far higher number of reasons. It is best to take your car to a mechanic’s, if you are not experienced in vehicle engines yourself, in both instances.
What is the biggest variable in the quote of your alternator belt replacement?
It is the labor cost that is often the biggest variable in the quote of your alternator belt replacement cost. This is because not only will some alternator belt replacements take a shorter amount of time to replace, some mechanics are simply worth paying that little bit more for their experience.
Why do alternators need to be reconditioned?
This is because an alternator is the part of a car that helps your car’s engine to run as it helps power the electrical system.
How to tell if alternator needs fixing?
Good clues that your alternator needs fixing are when headlights of your car start to become less bright as well as the gauges on your dash starting to flicker. This is because the electrics are starting to fail.
What is the voltage of an alternator?
A reading should come up on your meter. If your alternator is in tip top working condition, it should read in the range of 13.8 to 14.2 volts. If it is too high, which is around 15 volts, it means that your alternator is not working properly.
Why do some brands charge less?
On the flip side, some brands are able to charge less because they have a bigger company as a whole and so are able to utilise economies of scale to keep their prices down for their customers. More often than not, it is the independent mechanic that prices his services in the middle of the two.
Why do people choose famous brands?
People sometimes choose to go with a famous brand simply because they know it – they find it a comfort that the brand is well known and are willing to pay for it.
What is a remanufactured alternator?
There are alternators that are “Remanufactured.”. A remanufactured alternator means that the device has undergone major teardown and inspection. What happens is that the old and broken parts are replaced with new ones with improvement and update.
What does the alternator warning sign mean?
Many cars are built with an alternator warning device in case it detects a problem with your alternator. Most warning device will show a battery symbol or the letters Alt or GEN which means “alternator” or “generator.”. The next sign will be the dimming of the lights. If you still fail to see the signs then the next issue will be ...
How much does an alternator cost for a Ford Mustang?
But as said, the price would depend on the brand as a New ALTERNATOR FITS Ford Mustang only cost almost $100. So it is critical that you would know what kind of alternator your car is using. You cannot just go to a store and pick up an alternator that fits your budget.
Why does my alternator break down?
Your alternator may broke down earlier if the protective engine undercover or shield is broken . That is because sand and water will enter your alternator and will damage the device prematurely. Change the cover immediately once you see any damage as it is much cheaper to change the case rather than the alternator itself.
Why is an alternator important?
That is why it is crucial that you know how it works, checks regularly its performance and maintain it just like the engine.
How much does it cost to replace an alternator?
An alternator is not a cheap car part. A new alternator usually cost around $100 to $850 depending on the type and brand.
What is an alternator?
Your car's alternator generates most of the electricity in your vehicle, powering everything from the radio to taillights. Here’s how it works:
Symptoms of a bad alternator
A broken alternator — not to be confused with a failing alternator belt (also called the serpentine belt) — can be hard to diagnose because many of the symptoms of a bad one are the same as the symptoms of a faulty battery, and both can be debilitating enough that diagnostic tests are impossible to run.
How much does it cost to repair an alternator?
Repairing your vehicle's alternator generally isn’t a viable option compared to replacing one. There are a few reasons for this, but the main one is that repairing something can cost a lot more in terms of labor than replacing it.
How much does alternator replacement cost?
We gathered estimates for replacing an alternator in three sample vehicles in Austin, Texas, to give you examples of what this service might cost. The costs for replacing an alternator in these sample cars range from roughly $530 to $2,660.
Can I drive with a bad alternator?
You can potentially drive a short distance with a faulty alternator, but we don’t recommend it. Because this component powers so many different parts of your vehicle, driving with a bad alternator can impact various functions. A faulty alternator often leads to a dead battery, but if left unfixed, it could ruin your car battery too.
Bottom line
Replacing your car's alternator isn’t cheap, but it’s also not the worst car problem you can have. If you’re having problems with your car’s charging system, take it to a mechanic, get it diagnosed, ask for an itemized quote and make sure you’re not being overcharged.
Why is my alternator reading below 13.8V?
Similarly, if the reading is below 13.8V, this is mainly because the alternator can not provide sufficient power to the battery, so it needs a replacement. A typical battery carries a charge of 12V, so you should not charge the battery intensively over 12V as it can cause serious problems. Check this out:
How does an alternator work?
The alternator converts the mechanical energy of a car’s engine into electrical energy to charge your battery and power other car’s electrical components. This energy provided by the alternator, in turn, runs the car. The alternator is named so as it produces an alternating current (AC). AC power or current is the one that reverses its direction ...
What happens if an alternator fails?
If the alternator fails to function, the power supply to the battery is disrupted, and sufficient power is not provided to the battery.
What is a voltmeter used for?
For this purpose, a voltmeter is used that reads the number of volts produced by the alternator of a vehicle. The battery is disconnected. The mechanic removes the drive belt as well as the alternator. A new drive belt and alternator are installed. The battery is reconnected.
How long does an alternator last?
Alternators can last longer than batteries. An alternator’s average lifespan is about 5-8 years, depending on how often and what model you drive.
How to check the power of an alternator?
Following are various steps you can take to check the power (output) of an alternator. Turn off your car’s engine and open the hood to get access to the battery. Locate the alternator of your vehicle and check that the drive belt is not loose. Pivot your multimeter on the 20V reading.
Why is my car not starting?
What the alternator does is that charges the battery as the car is running. If the battery is dead , it means there might be a problem with the alternator, and the vehicle will not start.
What's an alternator?
All cars with internal combustion engines have alternators. It's a small generator of electricity that's bolted to the engine. It's the component responsible for charging the battery and supplying power throughout your vehicle. Without it, you have trouble using lights, climate controls, and the radio.
Signs your alternator is beginning to fail
Most alternators are designed to last for 10 to 15 years without problems. But eventually, you may need to replace it if you notice the following signs:
How much does it cost to replace an alternator?
When you start noticing certain issues, it's time for an alternator replacement. You can go to your local auto shop to get this work done. But you should be prepared for a hefty bill.
Can I still drive with a bad alternator?
While you can technically still drive with a faulty alternator, it's ill-advised. The alternator charges the battery. So when it starts to go bad, the battery drains more quickly. In addition to needing a new alternator, you may also need to pay for a new battery on top of it.
Will insurance cover an alternator replacement?
Alternators usually die from normal wear and tear. As a result, insurance policies typically don't cover the cost of a new one. The only exception would be if the alternator was damaged in a car crash.
When the time comes, can I rely on my insurance?
When it comes to car insurance, there are several factors to consider beyond monthly cost. A policy that covers you when you need it, has a low deductible, and offers several discounts can be hard to find - which is why we've done the work for you.
Alternator Operation and Repair
An alternator’s repair may be required for a variety of reasons. However, before we show you how to repair an alternator, we will take a moment to explain the operation and demonstrate the structure of this part. The alternator rotor consists of a shaft with closed windings at the claw poles, bearings and two slip rings connected to the windings.
When is alternator repair needed?
Note that the alternator consists of many parts with different functions. Their operation allows for electromagnetic induction, where some of the mechanical energy from the internal combustion engine goes to the alternator, and a voltage is applied to the rotor windings. This in turn produces an electromagnetic field that rotates with the rotor.
How much does it cost to replace the alternator?
You may be wondering what to buy: a new alternator or a refurbished one? Repair costs will usually be lower than when replacing a damaged part with a new one.
How much does an alternator repair cost?
Alternator repair is less expensive, although the final price depends on the location of the parts in the car, their construction or scope of service performed and the number of parts replaced. For Alternator repair cost, you should not pay more than $40-$150.
