Alan's Auto

Alternator Repair Melrose, MA

Need Alternator Repair in Melrose, MA? Look no further than Alan's Auto. Our technicians have the experience when it comes to diagnosing and repairing alternators. We specialize in fixing all kinds of automotive electrical issues, including those related to your car's alternator including:


  • Alternator belt replacement
  • Alternator case repair
  • Electrical system diagnostic
  • Ignition oil repair/replacement
  • Starter circuit testing and repair


We use the latest diagnostics tools to troubleshoot alternator issues your car may be experiencing. Plus, we make sure our prices are competitive with other local service providers so you can rest assured that you're getting affordable quality service.

Common Alternator Problems

There are a few potential causes of an alternator not working, including:

  • Loose or corroded wires: The wiring within the alternator can become loose over time which can result in short circuits, preventing the alternator from charging the battery.


  • Faulty voltage regulator: A voltage regulator helps regulate the Alternator's output between 13.5 to 14.5 volts. If the regulator is faulty it may not be able to maintain that output range, resulting in a lack of power for your vehicle.


  • Worn bearings: Alternators have internal bearings which help keep them running smoothly and efficiently. Over time these bearings can wear out, causing your alternator to not work effectively and potentially break down completely.


  • Faulty diode: Inside an alternator there will be a device called a diode which helps convert AC current into DC current so that it can be used by your car's electrical system. If this diode becomes faulty it won't be able to effectively perform this conversion, resulting in your vehicle not having enough power to operate correctly.


  • Loose belts or faulty pulleys: The belt and pulley system are responsible for transferring power from the engine to the alternator. If these components become worn or damaged, it can affect the power transfer causing your alternator to not work correctly.


  • Faulty Alternator itself: The Alternator may become faulty over time, resulting in a lack of output power. This could be caused by  age or wear and tear.


  • Low battery charge: If the battery has a low charge, it may be caused by a faulty alternator. The alternator cant recharge your battery.


  • Overheating issues: Overheating can occur if your alternator is running too hard for too long, resulting in the internal components becoming damaged and malfunctioning.


Faulty Alternator or Battery

Think your battery is dead? It may be your alternator. One way to tell that your alternator may not be functioning properly is if your automobile dies soon after receiving a jump start. A healthy alternator would keep the battery charged when the engine is running.

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