All cars use a charging system that consists of two components, an alternator and a battery. The alternator is responsible for generating the voltage required for the various electrical components used by the car, and for charging the car battery. The alternators come with the reputation of being rugged and strong. However, it does not mean that there are no problems with these pieces. The issues do exist and there are some reasons why. The basic reasons for all alternator problems are overwork, too much heat and overloading. In addition to the previously mentioned reasons for problems, the alternator will have difficulty absorbing the accidental crossing of jumper cables. Also, if the battery cables get disconnected while the engine is still running, the alternator might fail. Due to these reasons, you need to be extremely careful while jump-starting any car.
Before you decide to remove the alternator and take it to a service station for testing, consider getting a Voltmeter, which can be bought for less than $5. You can keep on driving the car despite the possible problem for a couple of days and keep monitoring the voltage reading constantly. As long as the Voltmeter keeps reading above 12 volts, you can rest assured that the alternator is doing what it is required to do. Remember that the reading may drop while the engine is running in idle. This is quite normal and does not indicate any alternator problems. Ensure that the Voltmeter reading remains above 12 V while driving the car.
Another problem the alternators can face is a partial failure when the AC to DC converter fails. The reason why it is called a partial failure is that every alternator contains more than a single diode or a converter. If one of them fails, the remaining ones can still be working and performing their functions. However, the problem is that the overall result achieved might not be sufficient to keep the voltage high enough during the low and idle speeds of the engine.
Most people refer to the items under the car hood as the engine. However, the truth is that most of these “engine” problems have nothing to do with the actual engine and the piston block. The problem can lie somewhere else under the hood in one of the bolt-ons of the engine. The car alternator problems are an example of such problems. There are two ways of identifying when there are these types of problems in the vehicle.
Gradual degradation of the car’s electrical components and the dimming of the car headlights is a signal. Whenever there is an indication that the electrical equipment is underpowered, the alternator is likely to be the main problem. Another issue which indicates that there are alternator problems is the broken engine effect. Many times the alternator will not stop working suddenly but will begin to seize up and grind. As it is spinning at a substantial speed, it will make a terrible sound. It will make you feel as if a new car is required but all you will need to do is replace the alternator.