Alternators are long-lasting auto parts, often reaching up to 100,000 miles. Unlike other electrical system components, such as batteries, they aren’t the first thing that comes to mind when a vehicle fails. However, when a used car starts to accumulate enough mileage, alternator failure is something to watch out for. Use the following guide to learn more about this auto part and how to tell if it might be failing.

How Do Alternators Work?

Alternators work in tandem with the battery to generate electrical power for the vehicle. The device’s rotors spin to create electromagnetic energy. This forms an alternating current (AC) charge. The AC is then passed through diodes and converted into direct current (DC). This energy is passed into the battery and stored until it’s needed to provide the initial power to start a vehicle.

This process can only occur while the car is running. Most vehicle electrical components, like the dashboard lights and radio, are fed by the alternator’s energy current.

What Are Common Signs of Alternator Problems?

Frequent electrical system issues point to alternator trouble. If this auto part fails, it can ruin good batteries and cause the car to need constant replacements. Alternators don’t always break down completely—they can lose up to two-thirds of their operating power and still function. However, after they start to wear out, they won’t produce enough voltage to properly power the vehicle.

Flickering dashboard lights, poor heater performance, or a malfunctioning radio are signs of reduced voltage. Another indicator of failure is loud grinding noises emanating from the engine compartment. This is caused when the bearings that allow the rotor to spin freely seize up and impede its motion. The car will stop running if the alternator breaks down, so avoid being stranded by immediately following through on any signs of trouble.

If you need auto parts to repair a vehicle, contact Blue Lick Truck & Van Parts in Louisville, KY. This salvage yard provides budget-friendly products, and they’re proud to back every sale with a guarantee of quality. From pulling parts to final delivery, they offer comprehensive service that will save you time and headaches. If you don’t want to deal with installation yourself, they can have the auto parts installed in their third-party shop. Call (502) 955-1599 or visit them online to learn more about their services.