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alternators

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Symptoms of a Bad or Failing Alternator
Common signs include having to jump start the car frequently, dim lights when operating the vehicle, or the Battery Light coming on.
How Long Does an Alternator Belt Last?
Your car’s alternator is what delivers energy to your vehicle’s battery. It works by means of converting mechanical energy to electrical energy, taking power from the engine’s crankshaft and delivering it to...
Symptoms of a Bad or Failing Alternator Belt
A failing alternator belt can cause the Battery Light to turn on, dimming or flickering lights in the car, and engine stalls.
How the Alternator Works in Your Car
Your car alternator, at its most basic, is what works along with your battery and the rest of your charging system to keep your car running. When you start your car, you’re running on battery...
How to Test Your Alternator
Having your alternator fail can leave you stranded on the side of the road. Though it is not necessary to know every aspect as to how the alternator works, knowing...
How Long Does an Alternator Last?
Your alternator is a vital component in your car. It recharges your battery, using engine power, and it also delivers power to your car’s electrical components. Essentially, it keeps the battery from losing...
What Does the Alternator Warning Light (Battery Warning Light) Mean?
The alternator warning light means there is an issue with powering the battery. This could be due to the alternator becoming worn out.
A Mechanic's Guide to the Parts of a Car
Modern cars have many different parts and features, including catalytic converters, anti-lock brakes, four-wheel drive, and keyless ignition.
Alternator or Car Battery: How to Tell Which Part Is the Problem
When you need to go somewhere and your car won’t start, it’s not unreasonable to think that you could have a car charging problem. A jump start might fix it in the short...
Can a Car Battery Overheat in Hot Weather?
If it’s hot outside, and you’re experiencing car battery problems, you may be wondering if it’s possible for your battery to overheat. The answer isn’t really a straight yes or no. Generally speaking, your...
How Does a Mechanic Check a Car Alternator's Volt Output?
Have you ever wondered how a mechanic checks your alternator? It’s not something that has to be done all that often, because usually alternators are maintenance-free, and they can last for up to 12 years without needing repairs....
How to Buy a Good Quality Alternator
The alternator is one of those parts that, when it malfunctions, can leave you high and dry by the side of the road. This essential component of your vehicle’s systems turns mechanical energy into electrical...

Related questions

Question
Screeching serpentine belt when the a/c is on. Is this a problem with the serpentine belt?
Hi there. There is a problem with the alternator or a/c compressor clutch pulley. Check the pulleys out on each item and see which one is creating a heavy load or a skipping feeling as if the bearing is seizing...
Question
Electrical issue
Hello. The alternator failing may have strained the battery as it was going out. You may want to start by having the battery tested. The connection between the starting and charging system also need to be checked. All connections need...
Question
Car battery light is on
The battery light comes on to indicate that the charging voltage is low. It usually means there is a problem in the car's charging system. if the battery is in good condition, the car can still run for a short...
Question
Checking new alternator.
You should have a mobile mechanic like one from YourMechanic come to you so you do not have to worry about getting stranded on the road with a dead system. Have the engine light on inspected. by the mechanic to...
Question
Red Generator light and squeal at start. After stop, won't restart.
Before condemning the alternator, have the drive belt checked to see if it is loose from a stretched belt or worn belt tensioner. If the belt is loose and slipping on the alternator, the alternator will not be able to...
Question
Battery is not charging properly
This may be a sign of a weak battery, a failing voltage regulator or failing alternator. The alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine turns the...
Question
I put on my brakes and the alternater drops from 14 to 12 when the truck is in drive do you know what is the problem is
This may be a result of the decrease in engine RPM which results in the alternator producing slightly less than the normal output of 13.8 to 14.2. When stepping on the brakes, this also produces a slight drain on the...
Question
Check charging System light
The most common cause for the charging system light coming on is going to be the alternator. The battery is going dead due to the charging system is not recharging it and battery will go dead. In order to properly...
Question
Possible problem with alternator
Hello. You are correct, the next step is to remove and test, or just go ahead and replace the alternator. Replacement aftermarket alternators for the 2001 Pontiac Grand Am cover years 2000-2003. So reasonably you can conclude that the alternator...
Question
Charging system warning light.
This may be a sign of a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while...
Question
Battery is not charging properly
This may be a sign of a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while...
Question
Occasionally see "service charging system" on the DIC. What might be the problem?
This may be a sign of a weak battery, a failing voltage regulator or failing alternator. As you know, if the belt is loose and enough torque is supplied, this may cause the belt to slip slightly causing the alternator...
Question
Battery light turned on, car started running weirdly and it essentially died. Was able to jumpstart briefly, but it died again
This is likely a charging system problem (i.e. alternator or voltage regulator). As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine turns the...
Question
Is this my battery or alternator?
This may be a sign of a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while...
Question
Battery drain
It sounds like your alternator may not be charging quite as effectively as it should be. The drop in amperage at idle is not necessarily unheard of but could be the beginning of it starting to fail. The voltage when...
Question
Truck running very bad and I have a loss of electrical power.
Hi there. Before you decide to charge or replace the battery, check for a parasitic draw. To do this, remove the negative (-) battery cable from the battery and put a digital volt ohm meter (DVOM) on the battery cable...
Question
I bought a new battery and my car worked at first, but now it won't even start?
This may be a sign of a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine turns...
Question
3 alternators replaced!
This may suggest a failing voltage regulator. The voltage regulator is a unit that regulates the charging of the battery by the alternator. When the voltage regulator is not working properly, this may result in the alternator allowing too much...
Question
I've gone through 3 batteries in the last year
There is a lot of poor quality batteries on the market now that have only 12 or 24 month warranties on them. These batteries may last a year or two if you are lucky. If you continue having problems with...
Question
Battery keeps dying and is corroded. Is it the alternator or the battery?
The corrosion may have an impact on how well the battery connection transfers the charge from the alternator. It is also possible that you may have a faulty alternator or a weak battery that is not able to take a...

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