Share:

An alternator plays a critical role in running your vehicle. It converts energy from the crankshaft into electricity that’s used to power your car’s battery and electrical systems. When its components start to fail, several signs can indicate it’s time to take your vehicle to the auto shop. Below are a few of the most common symptoms of a faulty alternator.

How to Know Your Alternator Is Bad

1. Dimming or Flickering Lights

The alternator supplies power to all electronic accessories in your vehicle, including your headlights and dashboard. If you notice either of these components flickering or going dim, it may be an indication that the alternator is unable to generate enough power because it is not working correctly.

2. A Strange Odor 

Head to the auto shop if you notice the smell of burning rubber, as this may also be a sign of a bad alternator. This is due to the fact the alternator works with a system of belts, and if it overheats due to failure, it may burn the belts and create the odor. 

3. Weak or Dead Battery

Minnesota auto shopIf you constantly have to jumpstart your vehicle when you try to start it, there may be something wrong with your battery. And because one of the alternator’s main functions is to keep your battery charged when the car is running, the problem could be due to a faulty alternator. An auto shop expert will be able to tell you if the diminished battery power is a result of your alternator.

4. Odd Noises

It’s also worth a trip to the auto shop if you hear unfamiliar rattling sounds coming from your car, as a bad alternator can cause the engine’s bearings to fail. It’s especially important to get your car checked if any of the symptoms mentioned above accompany these sounds.


If you’ve noticed any of these telltale signs of a failing alternator, visit Glen's Precision Auto in Saint Cloud, MN. For more than 50 years, this locally owned auto shop has been proving top-notch auto repair services at affordable prices, along with boat repair, trailer maintenance, DOT inspections, and more. Visit the website to learn more about their services, and call (320) 251-4910 to speak with a knowledgeable auto repair expert today.

tracking