How to Fix a Broken Alternator Temporarily: Quick Solutions for Car Owners

Published on Mar 10, 2025

How to Fix a Broken Alternator Temporarily: Quick Solutions for Car Owners

Have you ever found yourself stranded on the side of the road, frustrated because your car won’t start? For me, one of the most stressful experiences happened when my car suddenly died, and I realized the alternator was the culprit. It felt like I had no way out, but I quickly learned there are temporary fixes for a broken alternator that can help you get back on the road. In this article, I’ll walk you through what an alternator does, how to identify issues with it, and how you can fix a broken alternator temporarily until you can get proper repairs.

1. What Does an Alternator Do, and Why Is It So Important?

To understand why a broken alternator causes so many problems, it’s important to first know what an alternator actually does. In simple terms, the alternator in your car is responsible for keeping the battery charged while the engine is running. It also powers other electrical components in the vehicle, such as the lights, radio, and air conditioning. I didn’t fully appreciate the importance of the alternator until I had my first major car breakdown. I had been driving for a while when I noticed the lights on my dashboard flickering. My first thought was that it was just a minor issue, but the next thing I knew, the car completely shut down. After getting a mechanic’s help, I found out that the alternator had failed. Without a working alternator, your car’s battery won’t get charged properly, and eventually, the car won’t start, leaving you stuck.

2. Common Signs of a Broken Alternator

The signs of a broken alternator can sometimes be subtle, and you may not realize the alternator is the problem until it’s too late. Over the years, I’ve learned to look for these signs that may indicate your alternator isn’t working properly:

2.1 Dimming or Flickering Lights

One of the first signs I noticed when my alternator began to fail was that my car’s headlights would dim or flicker, especially when idling. This happens because the alternator isn’t providing enough power to the electrical system, which causes the lights to fluctuate in brightness. If you notice your lights flickering, it might be a good idea to get your alternator checked out.

2.2 Warning Lights on the Dashboard

Another obvious sign that I experienced was the warning light on the dashboard. Most cars have a battery or alternator warning light that illuminates when the alternator isn’t working properly. This light indicates that your battery isn’t getting charged, and in my case, it was the first warning that something was wrong with the alternator.

2.3 Strange Noises

I also noticed a strange whining or grinding noise coming from the engine when my alternator was on the brink of failure. This noise is usually caused by a worn-out alternator belt or the alternator’s internal components beginning to malfunction. If you hear unusual sounds coming from under the hood, it’s a good idea to have your alternator inspected.

2.4 Difficulty Starting the Car

Eventually, I had trouble starting my car, especially after leaving it idle for a while. A failing alternator can’t properly recharge the battery, which results in a drained battery and difficulty starting the car. This can leave you stranded, which is exactly what happened to me on one occasion.

3. Temporary Fixes for a Broken Alternator

Now, let’s get to the main question: what can you do if your alternator breaks down and you need a temporary fix to get back on the road? While it’s important to get your alternator replaced as soon as possible, I’ve learned that there are a few temporary fixes you can try until you can reach a mechanic.

3.1 Jumpstart Your Car

The first thing I did when I realized my alternator was failing was to try and jumpstart the car. A jumpstart can provide enough power to temporarily charge the battery and get the car started, especially if the battery has been drained by a failing alternator. I’ve done this a few times when I noticed the car was struggling to start due to an alternator issue. While this isn’t a permanent fix, it allowed me to drive my car to a mechanic or auto shop for a proper repair. Pro Tip: If you need to jumpstart your car, make sure you let it run for a while afterward to give the battery some charge. However, if the alternator is completely dead, the battery will drain again soon after.

3.2 Use a Battery Charger

Another temporary fix I’ve used when dealing with a broken alternator is using a portable battery charger. This method helped me when I was stuck in a remote area with no one around to help. A battery charger can be plugged into the car’s battery, providing it with enough power to start the engine. Once the car is running, it can stay running for a short period of time. However, without a functioning alternator, the battery will soon lose power again. Caution: Using a battery charger is a good temporary solution, but it doesn’t fix the underlying issue. It’s still important to get the alternator repaired as soon as possible to avoid further damage to the electrical system.

3.3 Disconnect Unnecessary Electrical Components

If you're stuck and can't get to a mechanic right away, I’ve found that turning off as many electrical components as possible in the car can help preserve the remaining battery charge. This includes things like the air conditioning, radio, and lights. Reducing the strain on the battery helps it stay charged a bit longer, giving you just enough time to drive to a mechanic or safe location for repairs.

3.4 Towing to the Shop

If the alternator is completely dead, and none of the temporary fixes work, your best option is to have the car towed to a mechanic. I had a situation where my alternator completely failed, and I had no other choice but to call a towing service to take my car to the shop. In my experience, this was the quickest and most reliable solution to get my car repaired.

4. Preventing Future Alternator Problems

After dealing with a broken alternator a few times, I’ve learned that prevention is key. Here are some tips I’ve used to keep my alternator in good condition:

4.1 Regular Maintenance

I make sure to have my car regularly inspected, especially the alternator and related components. Regular maintenance can help catch small issues before they turn into major problems. I’ve found that scheduling routine checkups has saved me from bigger headaches down the road.

4.2 Keep the Battery in Good Condition

A weak or damaged battery can put extra stress on the alternator. I always check the condition of my car battery and replace it if it shows signs of wear or corrosion. This simple step helps keep my alternator running smoothly and extends its lifespan.

4.3 Avoid Short Drives

If you frequently take short trips with your car, the alternator may not have enough time to recharge the battery fully. I make it a point to take longer drives when I can, allowing the alternator to work efficiently and recharge the battery properly.

5. Conclusion: Getting Your Alternator Fixed ASAP

Dealing with a broken alternator can be frustrating and stressful, especially if you’re stuck on the side of the road. While temporary fixes like jumpstarting the car or using a battery charger can help get you through the day, the best solution is to get your alternator repaired or replaced as soon as possible. If you're ever in a situation where the alternator fails, don’t hesitate to call for roadside assistance or a towing service to get you to the nearest mechanic. Taking care of your alternator now will save you time, money, and frustration in the future.

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