If you've ever wondered what an alternator does, the simple answer is: it generates electricity for your vehicle while the engine is running and helps keep the battery charged.
The alternator is a key part of your vehicle's charging system. Without it, your battery would eventually run out of power, leaving you with a vehicle that may not start or continue running.
How Does an Alternator Work?
When your engine is running, the serpentine belt spins the alternator. The alternator converts that mechanical energy into electrical energy, which powers your vehicle's electrical systems and recharges the battery.
The alternator helps provide electricity for:
- Headlights and interior lights
- Air conditioning and climate controls
- Radio and infotainment
- Power windows and locks
- Dashboard electronics
- Engine computers and other electrical systems
Think of the battery as storing electricity and the alternator as generating electricity.
Signs of a Bad Alternator
A failing alternator can cause several noticeable symptoms, including:
- Battery or charging warning light on the dashboard
- Dim or flickering headlights
- Difficulty starting the vehicle
- Repeatedly dead batteries
- Electrical accessories behaving strangely
- Whining or grinding noises from under the hood
- Burning rubber or electrical smells
It's important to remember that alternator and battery problems can have similar symptoms. A proper charging-system test can determine which component is causing the problem.
Can You Drive With a Bad Alternator?
It's possible for a vehicle to continue running temporarily after an alternator begins to fail. However, once the battery's stored power is depleted, the vehicle can stall and may not restart.
If your battery warning light comes on or you notice symptoms of alternator trouble, it's best to have the vehicle inspected as soon as possible.
Alternator vs. Battery: What's the Difference?
The battery provides the electricity needed to start your vehicle and stores electrical energy.
The alternator generates electricity while the engine is running and helps recharge the battery.
Both components work together, so a problem with one can affect the other.
Need an Alternator Inspection?
If you're experiencing dim lights, starting problems, a warning light, or repeated dead batteries, don't wait until you're stranded.
Mike and Sons Automotive can inspect your vehicle's charging system and determine whether the issue is the alternator, battery, belt, wiring, or another component.
Contact Mike and Sons Automotive today to keep your vehicle's charging system working properly and your car ready for the road.