What are the Symptoms of a Failing Alternator?

Many drivers are not aware that the alternator is a key component in your car's electrical system.  What does it do, you ask?  Simply stated, it turns the energy from the crankshaft into useful electricity to power the vehicle's electrical systems and to help the battery recharge. When the alternator starts to fail, it can create a domino effect of electrical issues that can eventually cause a breakdown.  The issue is that it is often difficult to determine whether a failing alternator, a weak battery, or a bad car starter is the culprit.

So what are the symptoms of a failing alternator?  Here are 6 signs that are easy to notice:

1. The indicator light illuminates on the dashboard titled "ALT" or "GEN.”
2. Dim headlights generally mean the alternator is struggling to perform.
3. Other electrical systems that are powered by the alternator may start to act up, including power windows, power locks, dashboard lights, air conditioning, car radio, GPS, and etc. 
4. Sometimes Alternator failure can cause some of the bearings to fail in the engine, creating rare rattles and noises. 
5. When the alternator is failing, there might not be enough power in the spark plugs to keep the engine alive, which can cause it to stall for no reason while running.
6. The battery sometimes will be drained of its charge because the alternator is not capable of recharging it.

If your vehicle is getting hard to start, for driving safety, performance, and peace of mind, have the car starter, the battery, and the alternator checked as soon as possible.  Don’t delay until you are suddenly left stranded somewhere before taking care of starting issues.

  

Are you wondering what are the symptoms of a failing alternator?  Consult our ASE Certified technicians at Auto & Fleet Mechanic for more information about car starters, alternators, and batteries and to make an appointment. Our auto repair shop proudly serves residents in Modesto, CA, and the surrounding area.