How to Stop Light Bar Whistle

Have you ever been driving your vehicle, with the window down and the wind blowing through your hair on a sunny day, when suddenly an annoying (but familiar) noise begins to emerge? If so, you’re probably aware of what is known as a “light bar whistle.” This strange phenomenon occurs due to airflow disruption caused by aftermarket light bars installed behind the grille of a car or truck.

How to Stop Light Bar Whistle

Luckily there are some simple steps that can be taken in order to stop the obnoxious sound entirely! In this blog post, we’ll discuss why light bar whistling happens and how to stop light bar whistle. So buckle up and let’s dive in – it’s time to learn all about stopping the light bar whistle once and for all.

What is a Light Bar Whistle?

A light bar whistle is a high-pitched noise that is caused by an aftermarket light bar installed behind the grille of a car or truck. This whistling sound usually occurs when the vehicle is traveling at higher speeds and is caused by air passing through the openings in the light bar, which disrupts airflow and creates turbulence. The whistle can range in intensity, from a minor buzzing sound to an unbearable shriek.

10 Simple Steps to Learn How to Stop Light Bar Whistle

Step 1: Secure the Light Bar

First, you’ll want to make sure that the light bar is properly secured in place, as a loose light bar can exacerbate any whistling sounds. It’s recommended that you use the included screws to ensure a tight fit. But don’t over-tighten them, as this may cause damage to the light bar. You can also check to make sure the light bar is in the correct position and that all the screws are tightened.

Step 2: Install a Wind Deflector

The next step involves installing a wind deflector. This is an inexpensive and easy solution that can help to reduce the amount of air passing through the light bar and therefore stop the whistling sound. Make sure that you install it correctly, as an incorrectly installed deflector can actually increase the noise levels.

Installing a Wind Deflector

Step 3: Try Adding Sound Deadening Material

If installing a wind deflector doesn’t work, then you could try adding some sound-deadening material to your vehicle’s grille or around the light bar itself. This will help to dampen any noises coming from the light bar by absorbing any vibrations and reducing echoing effects. It’s important to choose a material that is specifically designed for sound-deadening purposes, as other materials won’t provide the same results.

Step 4: Consider Replacing Your Light Bar

Finally, if all else fails, then you may have to consider replacing your current light bar with one that is designed specifically for reducing noise levels. This could be a pricier solution, but it may be worth it in the long run if you want to get rid of that pesky whistle once and for all! If you do decide to replace your light bar, then make sure that you research beforehand and choose one that has been specifically designed for noise reduction.

Step 5: Don’t Forget To Check Your Mounts

Also, don’t forget to check the mounts that are holding your light bar in place from time to time. This will ensure that everything is still secure and reduce any vibrations or whistling noises. If the mounts become too loose, then you may hear a whistling sound. The best way to prevent this is by checking the mounts and tightening them if needed. Remember, it’s always better to be safe than sorry!

Step 6: Use A Foam Core Or Acoustical Ceiling Panel

If you’re trying to stop a whistling noise coming from your light bar but don’t want to replace it, then using an acoustic foam core or acoustical ceiling panel can help. These materials absorb sound waves and make them less noticeable, so they can be useful for reducing the intensity of the whistle. If you choose to use foam, make sure that it’s properly sealed in order to get the best possible results.

Step 7: Try Adding Rubberized Material To The Light Bar

Adding a Rubberized Material to the Light Bar

Another option is to try adding a rubberized material to the light bar itself. This will help to dampen any vibrations and minimize the noise levels from your light bar. You can use a variety of materials for this, including automotive foam tape or rubber grommets. It’s important to choose the right material for your particular light bar, as some materials may be too hard and could cause damage.

Step 8: Redirect The Airflow Around The Light Bar

If you’re still not happy with the results after trying all of these methods, then you may want to consider redirecting the airflow around your light bar. This is done by making small changes in the way air passes through and around the grille or by installing deflectors that will redirect it away from the light bar and thus reduce noise levels considerably. But be sure to research the best solutions that will work with your particular vehicle before making any changes.

Step 9: Re-Position The Light Bar

If the whistling noise is particularly grating, then you may want to try re-positioning the light bar. This can be done by adjusting the angle of the light bar or moving it slightly away from the windshield of your vehicle. Doing so should create less turbulence and reduce any whistling sounds. That said, be sure to research the best positioning for your vehicle before making any changes.

Step 10: Install A Soundproof Enclosure Or Barrier

Installing a soundproof enclosure or barrier around your light bar is another option that could help reduce any ambient noise levels coming from it. This can be done either inside or outside of a vehicle, depending on where it needs to be located in order to get desired results. Always make sure that the enclosure or barrier is tight and secure, and use materials that are designed for noise reduction in order to get the best results possible. Be sure to research the best options available before making any changes.

Installing a Soundproof Enclosure or Barrier

Following these steps on how to stop light bar whistle should help you tackle the problem of a whistling light bar once and for all. With some careful planning and installation, you can make sure that your car is free from unwanted noise disturbance. Good luck!

Do You Need to Get a Professional to Look at Your Light Bar?

If you’ve tried all of these steps and are still struggling to stop the whistling sound from your light bar, then it could be worth getting a professional to look at it. They can usually identify any problems that might be causing the noise and give you more specific advice on how to fix them. By following these tips, you should be able to significantly reduce or even eliminate the whistling noise coming from your light bar.

Frequently Asked Questions

Q: Is It Normal for a Light Bar to Whistle? 

A: Yes, unfortunately, certain light bars can produce audible whistling noise. This is usually caused by the air passing through the grille and over the light bar, which creates turbulence. However, these noises can usually be reduced or eliminated by following the steps outlined above.

Q: What Is the Best Way to Stop Light Bar Whistle? 

A: The best way to stop the light bar whistle is to make sure that all of the components are properly sealed and mounted securely, as this will reduce any vibrations that could cause whistling. Additionally, you can try deflecting the airflow around the light bar, re-positioning it, and even installing a soundproof enclosure or barrier.

Q: Are There Any Hazards Associated With Whistling Light Bars? 

A: Yes, whistling light bars can be distracting and even hazardous as they can draw unwanted attention from other drivers. Additionally, the noise can be a nuisance to those living near your vehicle. That’s why it’s important to take steps to reduce or eliminate the whistling sound from your light bar as soon as possible.

Q: What Is the Best Material for Reducing Whistling Sounds? 

Redirect the Airflow Around the Light Bar

A: Soundproof enclosures and barriers are usually the best materials for reducing whistling sounds. These can be made from a variety of materials, such as foam rubber, insulation lining, and even fabric. Be sure to research the best options available before making any changes.


Thanks for reading this article on how to stop light bar whistle. Overall, reducing the noise of your light bar whistle is relatively easy. With just a few tweaks, you can have a much safer and quieter riding experience. Aside from using soundproofing substances like Dynamat, you can also use other methods to help make your light bar whistle-free. 

Installing a dampening wind deflector around the light bar to prevent cross winds from causing the whistle can be a great way to reduce the noise too.

Besides that, aiming the lights downward instead of up in the air may also help keep the whistling noises at bay. By implementing these simple tips into your ride, you can surely enjoy your riding experience with silence and peace.

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