Back to all

Your Vehicle's Other Power Plant (Alternator Replacement)

May 11, 2025

Your vehicle's engine is probably the first thing that comes to mind when you think of a power plant.  But it has another power source that is vital as well: the alternator.

The alternator is what puts out the electricity that powers such things as your lights, power windows, sound system, and navigation.  Maybe you've started seeing those electrical components behaving in strange ways.  Maybe your power windows are going up and down a little bit more slowly than they used to.  Or perhaps your engine doesn't start as easily or is misfiring.  

Other signs of a failing alternator are headlights that are either brighter or dimmer than usual.  If your battery keeps going dead, it could be that the alternator isn't recharging it.  

The alternator has to get its power from somewhere, and in vehicles with internal combustion engines, that power comes from a drive belt powered by the engine.  Sometimes that belt can fail.  If you hear a whining sound, it could mean bearings in the alternator aren't turning as freely as they used to. You could even notice a burning smell.  Oh, and when you see your battery light illuminated on your dash (it looks like a rectangle with a - and + inside), it may be warning you that your alternator is not healthy.

Bring your vehicle in to us for a diagnosis if you notice any of these symptoms.  If your alternator is bad, we can recommend a new or remanufactured one to replace it.  Some new alternators are warranted for life and remanufactured units usually are guaranteed as well.  

It's important to your vehicle's health to have its alternator putting out the right power consistently.  It may not be as well known as the other power plant under the hood, but it's a vital part of helping your vehicle run the way it is designed to.  

Spartan Tire Brighton
4880 Old U.S. 23
Brighton, MI 48114
8102277377

Need Service?

Request a Quote

More articles from Spartan Tire Brighton

Why is My Brake Pedal Hard to Push?

October 12, 2025

When you push on your brake pedal, you should find your vehicle easy to stop. But at some point, you might notice stopping takes much more pressure on the pedal than it used to. When it gets to that point it becomes a safety issue, and you should bring your vehicle in so we can track down whats... More

No Charge (Why Won?t My Battery Hold a Charge?)

October 5, 2025

When your vehicles battery is dead, it leaves you with that horrible, helpless feeling. A dead battery means it wont hold a charge, and there are several reasons it wont. One is age. Batteries have chemical and electrical systems in them that create power, and as time goes by, they wont work we... More

Gearing Up (Differential Fluid Service)

September 28, 2025

You may have never thought about it, but when you turn a corner, the wheels on one side of your vehicle turn at a different speed than the other side. What is this magic? The answer is something called the differential. A differential is a gear box placed between the drive wheels and needs lub... More