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What Causes Abnormal Noises in Car Brakes?

1 Answers

SabrinaLee

07/29/25 4:45pm

Abnormal noises in car brakes can be caused by the following reasons: 1. Brake bedding-in: New cars or recently replaced brake discs and pads have a break-in period, during which some noise is inevitable. This noise, which can include vibration friction or sharp squealing sounds, usually disappears after driving a few hundred kilometers. 2. Normal ABS system activation: During hard braking, the brake pedal may produce a continuous "thudding" sound, sometimes accompanied by pedal pulsation. This indicates the ABS system is functioning normally. In such cases, simply press the brake pedal firmly (applicable only to vehicles equipped with ABS). 3. Metal hard spots in brake pads: Small metal particles in the brake pads can cause sharp, piercing noises when braking lightly. This issue can be resolved by braking hard several times, removing and resurfacing the brake pads, or replacing them with higher-quality ones. 4. Severe brake disc wear: Worn brake discs develop deep grooves around their circumference, causing noise when the brake pads rub against the groove edges. If the grooves are not too deep, resurfacing the edges of the brake pads can help avoid the friction. However, if the grooves are deep, replacing the brake disc is recommended. 5. Improper brake pad installation: Reinstalling the brake pads and applying grease or specialized lubricant to the connection points between the pads and calipers can solve the issue. Noise may also occur if the brake pads are installed backward, which can be fixed by reinstalling them correctly. 6. Small stones or water film between brake discs and pads: This can happen after driving on gravel roads, during dusty weather, or after washing the car. The noise can usually be eliminated by braking several times or removing the stones. 7. Foreign objects in the brake system: Dusty or sandy conditions can cause particles to enter between the discs and pads, resulting in hissing noises during braking.

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Toyota 4Runner City Fuel Consumption?

This vehicle has a combined fuel consumption of approximately 14 liters per 100 kilometers. Below is relevant information: 1. This is a rugged off-road vehicle equipped with a 4.0-liter naturally aspirated engine. The 4Runner is similar to the Land Cruiser Prado, both being rugged off-road vehicles. Both the 4Runner and Prado use a body-on-frame construction, which differs from the unibody construction used in ordinary sedans or SUVs. 2. In body-on-frame vehicles, the body shell and chassis are not integrated. This type of construction offers excellent torsional resistance, which is why many rugged off-road vehicles adopt this design. Vehicles with body-on-frame construction can handle more severe road conditions. The Land Cruiser Prado is a well-known off-road vehicle among many domestic consumers, enjoying excellent sales and reputation in the Chinese market.

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Can 92 gasoline be replaced with 95?

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