Browse

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Used Cars New Cars Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

How to Deal with Severe Low-Frequency Noise After Soundproofing?

1 Answers

GenesisRose

07/29/25 8:54am

Severe low-frequency noise after soundproofing is likely due to the use of incorrect soundproofing materials. It is recommended to use white sound-absorbing cotton (white cotton, Shirley cotton, ultra-fine fiber cotton), which can effectively absorb low-frequency noise waves generated externally or internally. Relevant details are as follows: 1. Avoid full coverage: If vibration damping sheets are chosen as the soundproofing material, do not opt for full coverage. While full coverage of vibration damping sheets can eliminate high-frequency noise during driving, the main noise inside the car is low-frequency noise. Therefore, using full coverage vibration damping sheets will not significantly reduce noise. 2. Counterproductive: Do not assume that more soundproofing projects will yield better results. If vibration damping sheets are applied along with additional sound-absorbing layers like white cotton, it may have the opposite effect, leading to noticeable low-frequency noise and even symptoms like dizziness and tinnitus.

Was this review help?

7

0

Share

More Forum Discussions

What does TCS mean?

TCS stands for Traction Control System, also known as the Track Control System. It determines whether the drive wheels are slipping by comparing the rotation speed of the drive wheels with that of the driven wheels. 1. When the former is greater than the latter, it suppresses the rotation speed of the drive wheels. 2. Its operation mode is very similar to ABS, as both use sensors and brake regulators. Additional Information: 1. When TCS detects wheel slip, it first adjusts the engine ignition timing through the engine control computer to reduce torque output or applies brakes to the slipping wheel. In cases of severe slipping, it further controls the engine fuel supply system. 2. During TCS operation, the transmission maintains a higher gear to prevent sudden downshifts when the throttle is increased, thereby avoiding wheel slip.

What are the effects of not changing engine oil in a timely manner?

Effects of prolonged non-replacement of engine oil: 1. The primary function of engine oil is to lubricate the engine. If it is not changed for a long time, the oil can become ineffective and deteriorate, which will increase engine wear. In severe cases, it may even lead to engine seizure. 2. Another important role of engine oil is cleaning. If the oil is compromised, it cannot effectively remove impurities (such as carbon deposits and metal particles) generated on the surfaces of engine components. Over time, this not only affects heat dissipation and lubrication but can also clog oil passages, leading to engine damage or even complete failure, with diesel engines being particularly vulnerable to worse operating conditions. 3. The cooling efficiency of the oil will decrease, adversely affecting certain car components. Especially for structurally weaker parts, prolonged exposure can lead to damage or even complete burnout.

What car brand starts with an 'h' logo?

The car brand that starts with an 'h' logo is Honda. Here is some information about the Honda logo: 1. The 'h' is the visual trademark for both Honda automobiles and Honda motorcycles, representing the first capital letter of 'honda,' the Japanese pronunciation of 'Honda.' 2. 'Harmony between people and vehicles, and between vehicles and the environment' is the development direction of Honda; dynamic, luxurious, and smooth are the consistent styles of Honda; designing powerful, fuel-efficient, and low-emission engines is the technological goal of Honda; attracting more customers with advanced and practical designs, excellent manufacturing quality, and relatively affordable prices is the philosophy of Honda.

How Long Does It Take to Replace a Car Belt?

Generally, replacing a timing belt takes about 2-3 hours. The method for replacing the timing belt is as follows: 1. Rotate the crankshaft pulley to align the pulley notch with the protrusion on the oil pump housing, adjusting the timing point. 2. Remove the crankshaft pulley bolt and the crankshaft pulley. 3. Remove the lower timing belt cover and the guide pulley. 4. Remove the timing belt tensioner, take off the belt, and then proceed with installation. 5. First, install the tensioner. Adjust it to the loosest position, with the inner angle hole adjustment position mark aligned at 180°. 6. Install the belt and adjust the tensioner. During adjustment, align the lower end of the tensioner notch with the pointer, then tighten the bolt. 7. Assemble the timing belt cover. First install the middle iron cover, then the upper and lower covers, and finally install the generator pulley, tensioner, and belt in order.

What to Do If Vehicle Fails Emission Test During Annual Inspection?

If your vehicle fails the emission test during the annual inspection, here are several solutions: 1. Clean the three-way catalytic converter. The catalytic converter is a specialized component that transforms carbon monoxide and hydrocarbons produced during combustion into harmless gases. However, if its performance deteriorates, it can lead to failed emission tests. The solution is to clean or replace it. 2. Remove carbon deposits. This involves cleaning the intake grille located at the throttle valve and fuel injector, including the top parts. 3. Replace the spark plugs. If spark plugs are not replaced for a long time, they may fail to ensure complete combustion of the fuel mixture, resulting in excessive HC levels in the exhaust. For the fuel injector, an overly rich fuel mixture can increase pollutant levels in the exhaust, causing the vehicle to fail the test. Therefore, replacing these components before the inspection can effectively resolve the issue.

How to Calculate Fuel Consumption?

The calculation method for fuel consumption per 100 kilometers is: the volume (liters) of a certain amount of fuel divided by the distance (kilometers) the car can travel under that amount of fuel, multiplied by 100. That is, the calculation method for fuel consumption is: The volume (liters) of a certain amount of fuel divided by the distance (kilometers) the car can travel under that amount of fuel. Extended content: 1. Fuel consumption is a very complex matter, depending on the car's performance, road conditions, and the driver's driving skills. 2. The fuel consumption per 100 kilometers indicated in the manuals of domestic cars is the constant-speed fuel consumption, which refers to the fuel economy index when the car is driving at a constant speed on good road surfaces.

Trending Ranking

What is the minimum speed required to use cruise control?

What does brake-hold mean on a car?

What procedures are required to downgrade from A2 to C1?

What to Do When Experiencing Difficulty Starting a Hot Engine?

Where is the OBD interface located in the Touran?

What are the symptoms of a damaged automatic transmission control module?

What is the emission standard of MAXUS?

Where is the cabin air filter located in the Audi A4L?

What does the wrench symbol on the gear display of Volkswagen CC mean?

Which country is MG from?

More Forum Discussions

When will the new BMW X5 be domestically produced?

Why doesn't the steering wheel automatically return to center?

What Causes the Prado Key to Not Turn?

What is the Difference Between Full-Time Four-Wheel Drive and Part-Time Four-Wheel Drive?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.