Many people can just rush to a mechanic when their Porsche alternator fails, but it still pays to know how to check the volt output for this component. Alternators may be maintenance-free and can last up to more than a decade without requiring any repairs. If you are curious enough and you wonder how mechanics actually check your car's alternator, you can always do so by following the tips in this page. This is critical when alternators suddenly fail, right before you have them fixed or replaced.
Signs that Alternators are Failing
These are things you need to consider before you have your alternator checked by a mechanic. Sometimes, you will notice that the charging icon stays on once you have started your car. This does not really mean that the alternator is going bad, but it can be taken as an indication that something is already wrong with the component.
Using Computerized Charging System Testers
Mechanics use a special tool to check an alternator. This is called the computerized charging system tester. The process is called an AVR test. During the test, you can see if there is any sign of weakness in the charging system. You can also use the result of the test to determine whether the alternator requires repair or replacement. The special tool also identifies problems like faulty wiring, a loose drive belt, blown fuses, and a defective ignition switch.
The Voltage Test
This is another tool that can be used to know if there is a need to repair or replace your alternator. A voltage test has been designed to measure the amount of voltage present in the car's battery, both while the engine is turned off, and when the engine is running. Voltage commonly increases when the engine starts operating. This is but understandable since the alternator already delivers more power when the engine is turned on. In case the voltage does not increase during this stage, you can take that as a sign that something is wrong with the charging system.
Why Do Alternators Go Bad?
There are plenty of reasons behind why alternators suddenly fail then start going bad. It can be because the bearings have gone bad, or that instance when there is a whining noise produced by the alternator. Worn out contact rings or carbon brushes can also indicate that there is a problem. When the voltage regulator is damaged, then the alternator will also be affected.
In any of these cases, you cannot just rely on your guts to solve the problem. You need help to know the most sensible solution to the alternator's condition. You can always count on trained professionals to assist you, not just when locating the best alternator replacement for your car, but also when replacing the component as necessary.
The methods mentioned above can serve as your guide in checking the alternator's volt output. Once the mechanic makes the test and spots the problem, he can also assess how severe the alternator condition is. From there, he can make recommendations for repair or replacement.