Car Generator Problems

A drive belt spins a car's alternator to produce electricty.

Cars don't just need gasoline for energy. They also need electricity. The generator that produces a cars electricity is called an alternator. It also recharges the car's battery. The spinning of the alternator that produces electricity is driven by the car's engine. Many factors can effect the performance of this generator.

Effects

A drained battery can often be a sign of a malfunctioning alternator. Blown bulbs and battery damage can also indicate alternator problems. Dim lights and other electrical components operating improperly can also be symptoms of a faulty alternator.

Causes

A slipping drive belt can cause an alternator to undercharge the battery. Worn brushes and other internal components can hinder an alternator's performance. An alternator can also overcharge a car's battery. This could be due to a faulty voltage regulator, which is sometimes contained within the alternator, but can be a separate component.

Solution

The easiest solution is to replace an alternator. They are only attached by one or two bolts. Confident mechanics can also choose to rebuild an alternator. But no matter what solution a car owner chooses, he should test the alternator's output first.

References

• Nations Starter and Alternator: How Does an Alternator Work?
• Econofix.com: Alternator and Generator Repair and Diagnosis
• AA1Car.com: Starter and lternator Troubleshooting