Exploring Problems With Your Alternator


In order to make sure your Alternator lasts a long time and performs at peak performance, there are some simple steps you can take to help maintain your unit. First you need to conduct a visual inspection under the hood. Ensure that all three cables are properly connected to the alternator, that it is not loose, cracked, worn, or glazed. Also if all these checks check out and you still have problems with your Alternator, then examine the electrical connectors and cables for poor quality firmness and signs of internal corrosion.


Next you should examine the mechanical parts of the Alternator. The serpentine belt plays a big role in the performance of the Alternator. The alternator provides enough power to the starter and acts as a generator during cold starts. A weak or poorly performing alternator will usually start the car before the engine is warm enough to do so itself and often will fail to start at all when engine temperatures become high. In addition, the alternator produces a great amount of mechanical energy for the transfer of electrical energy from the battery to the starting motor, and then on to the batteries.


When the battery warning light comes on, a common indication that the Alternator may be experiencing electrical difficulty. Check all battery cables to ensure that they are correct and secure. You should also check the voltage at the terminal connectors. The terminals on the positive side are connected to the Positive Power Supply (PPS) wire on the battery, while the terminals on the negative side are connected to the Negative Power Supply (NPV) wire on the battery. If either of these wires are bent or damaged, the alternator may be suffering from excessive wear and may need to be replaced.


If your car uses a gas engine, a low battery warning light will come on if the gas tank is low on fuel. Also, the starter may not start unless the vehicle battery is full. In some cases where the gas engine has failed completely, the alternator will also fail to start unless the gas pedal is pressed.


Warning lights such as the above may indicate that the Electronic Accessories (EA) is not being properly maintained. If the headlights or taillights do not work, the wires in the wiring harness are too long or the terminals are corroded. Typically, this means that the Alternator may require a recharge or adjustment to the voltage. It is important to always read and follow the manufacturer’s warranty instructions for proper replacement and maintenance of all Electronic Accessories.


Another common reason for alternator problems is weak or bad ceramic components at the rotor. Ceramic rotors have terminals and wires that are very sensitive to extreme changes in temperature. A minor fluctuation can lead to a fire that can easily damage the interior of your vehicle. If the rotor is damaged, the voltage regulator may be too high or the power will be shut off by mistake. This can also cause the battery to overheat and eventually burst.


The alternator also plays an important role in getting enough power to the engine running smoothly and with sufficient voltage. If the alternator is weak and/or is overheating, the engine will be getting enough power, but the battery will be under-powered, causing erratic whining noises. This can be frustrating to drive because you will feel like your car needs to “growl” when you go fast or if it feels like the engine is straining a bit. Sometimes you can tell that the fan motor is getting too hot, but you have no idea what the problem is.


With a battery, the alternator only provides power when the batteries are fully charged. If the batteries are below their charge, the alternator works to charge the batteries up to their full capacity. When the batteries are fully charged, the alternator will stop charging the batteries, allowing the batteries to return to their original state. A weak alternator puts excess strain on the battery, which makes it harder for the battery to return to full capacity after charging.

Car Battery Maintenance Tips

2013-2020 Dodge Durango Alternator 5.7L

2018-2021 Honda Accord Alternator Replacement

Starter and Alternator Repair Shop Near Me

2013-2020 Dodge Durango Alternator 3.6L

Autotech Mobile Mechanic

5410 W State Rd 84
Davie, FL 33314
United States (US)
Phone: 9548265523
Monday8:00 AM - 6:00 PM
Tuesday8:00 AM - 10:00 PM
Wednesday8:00 AM - 10:00 PM
Thursday8:00 AM - 10:00 PM
Friday8:00 AM - 6:00 PM
Saturday8:00 AM - 5:00 PM
Sunday8:00 AM - 5:00 PM