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Home >   How To >   How to Repair Alternator

How to Repair Alternator


The alternator repair "How To" section of our site is here to help when you need that little bit of extra knowledge to get your project up and running. From the list below select the video or article that is related to info about the product line desired.


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The alternator, powered by the engine's crankshaft, is a part of the automotive charging system. It converts the energy created by the pistons into a circular motion. The alternator and your battery work together to provide power for all the electrical components in your car. The electricity created in the alternator flows through the battery (which keeps your battery charged), providing the necessary voltage to power the different electrical components in your vehicle. If you look on the back of your alternator, you can see different electrical connections: The S terminal is responsible for measuring the battery voltage. The IG terminal is the ignition switch that powers on the voltage regulator. The L terminal closes the circuit to the warning lamp. The B terminal is the primary electrical output that connects to the battery. Finally, the F terminal is a full-field bypass for the regulator.


The failing of cooling fans is a common alternator-related problem that many people experience in their car. The alternator generates a lot of heat when it is functioning and it must be cooled down to avoid overheating. There are cooling fans inside the aluminum housing that keep your alternator from getting too hot during normal operation. When these cooling fans break, it is important to get them fixed right away because without the cooling effect, the alternator will overheat and eventually fail. If your alternator is not working properly, it can cause damage to your entire electrical system. Over time, dirt can build up in the rotors of the alternator and cause the rotors to lock up. Bearing failure is one of the most common problems with older alternators. When your alternator seizes, it will destroy your battery. You want to make sure you catch alternator problems early before they wreak havoc on your electrical system. If you think that your cooling fans might be failing, or you hear the rotors in your alternator grinding, you should have the issue examined by a mechanic immediately.


Purchase high-quality Alternators at Buy Auto Parts


If you are looking to buy a genuine alternator, Buy Auto Parts is the right place. We will get you the alternator once you select your automobile's right year, make and model. Coming with an industry-leading warranty at unbeatable prices, our alternators are meticulously tested to meet or exceed industry standards. We also offer free shipping for purchases over $99. Your order will reach you on time, as it will be shipped from one of our warehouses close to your location. If you have trouble in locating your part, our support team is at hand to help you: call us at or leave us an email at [email protected]. You can browse through our extensive line of throughly-tested OEM replacement and aftermarket parts for every make and model.


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