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It’s a common misconception that the battery powers all the electrical components of a vehicle. However, its primary purpose is to turn on the starter. While the car is running, the alternator is responsible for generating electricity. This device converts mechanical energy from the engine into electrical energy, which the system uses to charge the battery and power the lights, instrument panel, stereo, and other parts. To understand how this vital component works, here are three reasons why it might fail.

Why Is My Alternator Malfunctioning?

1. Bad Wiring

Your alternator features several wires that carry the electric current it generates. If any of these get loose, damaged, or worn down, the alternator’s output will be either reduced or cut off. There are also external wires connected to the alternator you can inspect visually. However, you should bring your car to a mechanic for a thorough check if you notice any electrical issues.

2. Worn Down Shaft Bearings

The alternator’s rotors make use of shaft bearings that allow them to spin freely. These bearings will wear out over time, causing the rotors to stall or lock up. Bearing failure can also be caused by the accumulation of dirt, which turns into grime when mixed with oil and moisture. Have the bearings replaced when this happens.

3. Installation of Power-Hungry Devices

alternatorSome car owners like to customize their vehicles by installing powerful speakers without considering their output requirement. Your alternator may overexert itself to keep up with demand, which leads to burnout and failure. Plugging in too many electronic devices and using a weak battery can also cause this. Have aftermarket electronic components installed by a professional and check your battery’s voltage regularly.

 

If you need to have your alternator replaced, come to AAW Auto Parts in Pasco, WA. For over 20 years, this family-owned and -operated company has provided their customers with quality and affordable auto parts, including batteries, spark plugs, radiators, and brakes. Call (509) 547-6000 or visit their website to learn more about their services.

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