The Power Behind your Engine (Alternator Diagnosis and Repair)
April 24, 2022
There's nothing like that sinking feeling when you turn the key and nothing happens in your vehicle. A lot of us are quick to blame the battery. But it may instead be your alternator that's failing.
Your battery supplies power to start your vehicle, but the alternator is what sends power when your engine is running. The good news is alternators last a fairly long time, and it's not unusual to get seven years out of one. But they can give up the ghost thanks to the harsh conditions in the engine compartment.
Alternators have bearings inside them that keep things turning smoothly. Debris, liquid, dirt and more can team up with the high temperatures your engine generates to cause those bearings to seize up. That's not good, and if that happens, you may even be able to hear the bearings grind.
Other symptoms of a dying alternator are a squealing noise in the engine compartment or your headlights may go dim and bright, dim and bright. You might even notice an electrical smell. Any of these signs warrants a trip to your service facility.
Here's something else to think about. If your alternator's bearings have seized up and the unit's shaft is not turning freely, that can destroy the belt that's attached to it. So don't be surprised if your service advisor says both parts have to be replaced.
There are different grades of alternators you can buy, but consider just how important this part is to keep your vehicle running. Your service advisor will give you options based on your driving style and vehicle. Remember, if you notice any of those symptoms that may signal a failing alternator, have it taken care of before you wind up stuck somewhere at the side of the road.
Charlie's Fast Lube Sikeston
2017 E. Malone
Sikeston, Missouri 63801
573-472-1139
http://www.charliesfastlubesikeston.com
Need Service?
More articles from Charlie's Fast Lube Sikeston

Rotation Explanation (Tire Rotation Patterns)
March 2, 2025
You may notice that when you get your vehicle's oil changed, your service adviser may recommend that you have your tires rotated at the same time. The reasons are simple. That will allow your tires to wear more evenly and reduce the noise your tires make as you drive down the road. There are di... More

Giving CV Joints the Boot! (CV Joint and Boot Replacement)
February 23, 2025
Ever wonder how your vehicles transmission is connected to your wheels? After all, when you hit a pothole or some other uneven part of a roads surface, there has to be something that can maintain the connection between the transmission and the wheel yet keep everything moving at the same speed. ... More

Braking Good (Brake Drum Replacement)
February 16, 2025
Maybe your vehicle feels like Breaking Bad. In other words, when you brake, things are bad. You may find it takes you a longer distance to stop, you feel a vibration, or its pulsating when you depress the brake pedal, or perhaps your vehicle pulls to one side. Those can be symptoms of failing b... More