If you just had a new battery put in your car, truck, or C/SUV, and you already have to jump-start it, this is a sign that the alternator has died and can no longer charge the battery. The alternator is the electrical system part that generates voltage; up to 14.5 volts to be exact. The average lifespan of an alternator is about 10 years. A battery that dies constantly is one sign that the alternator is going bad. Demore’s Automotive is going to list the other signs below.
Accessory Problems
Aside from keeping the battery charged, the alternator also provides power to the accessories. If your accessories start to have problems, such as shutting off by themselves or slowing down, they are not getting enough power from the alternator.
Burning Electrical Wires
As we mentioned above, the maximum voltage and alternator should produce is 14.5 volts. If it produces more than this, it will overheat your electrical system and you will smell burning electrical wires in the engine. A malfunctioning alternator can produce too much electricity.
Dashboard Warning Light
You may also end up with an illuminated dashboard warning light if the alternator is malfunctioning. The most common light that turns on is the battery light. If you drive an older automobile, however, the dashboard may be equipped with an ALT or Gen light.
Flickering or Dim Lights
Another sign that the alternator is going bad is flickering or dim vehicle lights. If the alternator is producing excess electricity, the lights will be unusually bright. As you can see, the alternator provides power to many of your vehicle’s accessories and components.
Frequent Stalling
Another such component is the spark plugs. The alternator sends power to the spark plugs so they can generate a spark in each cylinder to ignite the air and fuel. If your engine has started to misfire and stall frequently, it’s possible that the alternator is no longer able to provide power to the spark plugs.
Strange Engine Noises
Finally, you may hear strange noises coming from the engine if there is a faulty alternator underneath the hood. Specifically, the alternator will growl as it tries to produce power if the internal mechanisms have worn out. This may also sound as if the alternator is grinding. The alternator belt can also produce a squealing noise if it is too loose.
Demore’s Automotive in Palmer, MA, is here to help, so call us today if your vehicle is showing any of the signs listed above that the alternator is dying.
