How to Diagnose a Failing Alternator

Author: TheAutoStore   Date Posted:22 July 2019 

How to Diagnose a Failing Alternator main image How to Diagnose a Failing Alternator image

How to Diagnose a Failing Alternator


You and your car have come a long way together, but don’t let a failing alternator be an issue that can leave you stranded somewhere.

The alternator is a key component in your car's electrical system that handles varying electrical loads. When it starts to fail, it can create a chain of events of electrical problems that can ultimately cause a disruption. If the battery is oppressed and begins to fail a charge, it can place stress on the alternator which eventually causes alternator failure.

Reach kilometres without the anxiety of breakdown by keeping an eye out for the symptoms of a failing alternator and range beyond limits.

Trouble Starting Your Car: Diagnosing Alternator Failure

Your car is not just running on fuel; it runs through electricity too. The alternator supplies power to the spark plugs that flare up the fuel in your engine. A failing alternator may not be able to produce enough power in the spark plugs to start or keep the engine running, causing it to stall! Overlook this symptom, and your car eventually won't start at all.

Headlights are Flickering: Sign of Alternator Issues

Dimming headlights is a sign that your alternator is starting to fail. The alternator provides power to the headlights, so the flickering usually means that the alternator is struggling to perform. An alternator that is in good working condition will maintain dazzling headlights no matter what speed you are driving. Both flickering and dimming headlights are strong indications that your alternator is going wrong.

Failing alternator is equivalent to Electrical Failures

Failing alternator causes electrical devices and other systems that are maneuvered by the alternator to function inappropriately. Electrical failures could present themselves in a variety of ways. These can include the power locks, dashboard lights, air conditioning, and even your car stereo.

Alternator Indicator Light 

Your vehicle is equipped with an "ALT" or "GEN" warning indicator light in the dashboard. These indicators should light up every time you start the engine. If it doesn’t, you may probably have a problem.

Strange Noises in Alternators

Spinning parts inside the alternator are the means to produce an electrical current. If one of those parts breaks or wears out, you might hear unusual sounds. If you hear any type of whining or grinding sound, that is a good indication that your alternator needs to be corrected.

Weak or Dead Battery

The battery is not for a long-term power source. But when the alternator breaks down, it’s up to the battery to support all electrical power in your car. A failing alternator can cause the battery to drain because it's declining to recharge it. If your battery goes dead, have the alternator examined when replacing the battery so it doesn't happen persistently.

When you notice these diagnoses, it's another warning sign indicating a trip to your mechanic.

If you believe that you are suffering from alternator trouble, don't hesitate to contact The Auto Store--an online seller of parts from Australia that provides quality alternators and more.