If you have noticed it is strange and engine noise emitting from a car stereo, then you are not alone in this line. This is a pervasive issue that has been faced by many. There are many reasons for this in vehicles, including loud engine sound and speaker noise.
Some ways to remove this noise from car speakers include checking the stereo wiring system, using shielded RCA cables, noise filters, sound-deadening mats, and many more.
Thankfully, there are many simple steps to go through how to get rid of engine noise in a car stereo.
So scroll down to learn all.
How To Get Rid Of Engine Noise In Your Car Stereo Systems
If you’re experiencing engine noise in your car stereo, there are a few things you can try to get rid of it:
- Check the Grounds: Ensure that the ground wire of your car stereo is securely connected to a metal point on the car’s frame. Also, check the ground connections of other components such as amplifiers, equalizers, and crossovers.
- Use Shielded Cables: Use shielded cables for your car stereo connections. Shielded cables help to prevent electromagnetic interference that causes engine noise in your car stereo.
- Check the Alternator: If your alternator is producing too much noise, it may be the cause of engine noise in your car stereo. A faulty alternator can produce noise that is picked up by the stereo. In this case, you may need to replace the alternator.
- Use a Ground Loop Isolator: A ground loop isolator can help to eliminate engine noise in your car stereo. It works by breaking the ground loop between your car’s electrical system and the audio system.
- Check the Spark Plugs: Worn or damaged spark plugs can cause engine noise that can be heard in your car stereo. Check your spark plugs and replace any that are worn or damaged.
If none of these solutions work, you may need to seek the help of a professional car audio technician to diagnose and fix the issue.
What Does Engine Noise Interference Sound Like?

If you are one of the unfortunate few, who suffer from this issue. Your car will make an annoying high-pitched whining noise when listening to music at loud volume levels.
The pitch gets louder and higher as the song speeds up, which is why listeners notice most times if it is happening regularly. There could be anything wrong with the installation or wiring inside your vehicle that needs attention immediately.
It might also indicate an issue with the car’s charging system.
What Does All Of This Mean About RM?
It is essential to understand that RMS and peak power measurements don’t tell the whole story of a car audio system. When you decide whether or not to upgrade your current setup, consider what type of driving conditions are present for everything.
To perform at its best potential (i.e., weather conditions). In general- but without specific details such as time spent accelerating while on turns – manufacturers will often exaggerate these values to appear more potent than they are, giving buyers unrealistic expectations, which leads them down an unhappy path later down the road.
To make things more complicated, speakers aren’t created equal. The speakers you choose will be as good as the amplifier feeding them. You are already familiar with how crucial it is to match your amplifiers’ power output to your speakers’ and subwoofers’ power ratings.
Still, most manufacturers would rather you not know that most speakers can handle a somewhat higher RMS than they advertise as long as your amplifier delivers anywhere from 75% to 150% of the stated RMS of your speakers. You won’t have any difficulties with them.
One of this article’s most vital recommendations is to ensure your amplifier is set to the same wattage as the speakers and car subwoofers it’s feeding. This will reduce the likelihood of your equipment failing significantly, allowing you to relax knowing that your system is operating effectively and can go for long periods without problems.
How Does Engine Noise Get Through My Car Speakers?

The alternator is one of the most frequent causes of speaker noise. If the sound changes in tone or intensity when the engine RPM fluctuates. An engine sound probably causes it, and interference from the alternator output is a strong possibility.
Because speakers use alternating current (AC) to produce sound, they need to convert the alternator’s DC voltage back into AC before pushing it through your car speakers. This happens through a process of transforming and rectifying. First, the alternator output is sent to the speaker’s amplifiers via diodes and capacitors.
Interference can occur whenever a car’s electrical system is not grounding out the current it creates. When these current spikes arise, they are unregulated, so they recently found another path through your vehicle’s audio system.
How to Stop Engine Noise Coming in Stereo?
Using a ground loop isolator or an inline noise suppressor quickly and easily eliminates the horrible whining sound coming through your vehicle’s stereo speakers. A ground loop isolator will take care of all your car speaker problems. In addition, this tiny device will automatically cancel out the interference-producing engine noise coming through your car speakers.

After this happens, any whine or hissing sounds you previously heard will disappear, leaving only excellent sound quality and enjoyment. This is because the power from your alternator is still being converted.

Still, instead of interfering with your music, it is working towards creating a clean, steady voltage for your stereo system. The isolator keeps the annoying hiss from getting inside your vehicle’s speakers, so you can thoroughly enjoy a smooth ride without interruption!
FAQs
Why does my car stereo have engine noise?
The most common reason for noise in car stereos is the ground. The manufacturer often installed all dash instruments on the vehicle’s base in one central location.
How can I reduce the noise in my car engine?
If your car engine comes with a shield or covers already, you can make it soundproof by adding a soundproof layer of damping material. So adding an underbody covering to the car engine can reduce the noise.
Why do I hear engine noise?
Common reasons for noise from the engine are. Lean air fuel ratio, improper timing, and improper octane. You can eliminate all these by increasing the octane level, enriching the air-fuel mixture, and reducing air pressure.