When it comes to vehicles, one of the most critical operating components is the alternator. It’s responsible for charging your car’s battery while the engine is running. Any time it’s malfunctioning, you’re going to encounter issues. Understanding how it works and what possible problems can occur is the best way to minimize the damage. If you’re unfamiliar with how this part works, here’s what you need to know.

How Do Alternators Function?

Alternators depend on a few simple components to generate energy. There’s a stationary set of coil winding, which is known as a stator, that sits just outside a spinning electromagnet. This is known as a rotor. When the engine starts, it activates a belt that spins the rotor. Then, as the rotor spins, it interacts with the coils of the stator and generates energy. 

How Do I Care for It?

For the most part, an alternator doesn’t require maintenance. It should last around 10 to 15 years. You don’t need to worry about aspects like refilling fluids or air pressure. If you notice deeper issues with your vehicle, take it to a specialist for a diagnosis. 

What Are the Signs It’s Failing?

When an alternator starts to die down, it will create a variety of problems. If you’ve started up your vehicle, but the engine just keeps turning, the alternator may no longer be working properly. There’s also a chance it’s related to the battery or the starter. 

 A cracked or misaligned alternator pulley belt can create the odor of burning rubber. It could be sitting on something that generates a considerable amount of friction, which causes the rubber to heat up quickly. 

Burning rubber isn’t the only issue you’ll notice if there’s an issue with the belt. If it’s stretched out and unable to fully spin, it’s typical to hear a squealing sound. However, if you hear a deeper, growling noise, the internal bearings could have become worn out. 

When both of your headlights and dashboard displays are dark or slowly shifting between dimming and brightening, the alternator may be to blame. In this case, it is unable to generate and send enough energy to these components. If you notice any of these issues, take your car in for an inspection and a new auto part. 

If you’re having problems with your car’s alternator, head to AAW Auto Parts for a new one. Located in Pasco, WA, this family-owned company has been the trusted supplier for aftermarket auto parts for more than 20 years. Customers throughout the Tri-Cities know they can always find what they need. For a list of the brands they carry, visit their website. If you have any questions, call them at (509) 547-6000.