There is a hissing sound when stepping on the accelerator while driving. How to solve the abnormal sound of stepping on the accelerator?

It's very annoying when your car makes abnormal noise. It is inevitable that all kinds of abnormal noises will appear when the car is used for a long time. But what is the reason for the abnormal noise when stepping on the gas pedal?

Causes and solutions of abnormal sound when stepping on the accelerator

1, abnormal sound of gasoline pump motor. When there is wear or impurity inside the gasoline pump motor, it will make an abnormal sound when we step on the accelerator. This problem requires replacing the gasoline pump.

2. Abnormal throttle sound. At present, the throttles are all electronic throttles, and it is naturally the motor that controls the opening and closing of the valves. When the motor gear is worn, the bite is not sufficient, resulting in abnormal sound. When there is too much carbon deposition in the throttle, it will also cause abnormal noise in the throttle. The throttle can be cleaned. If the motor is damaged, remove the throttle and replace the servo motor.

3. Poor lubrication of the accelerator pedal bearing will produce abnormal sound. You can grease the bearings.

4. The clutch release bearing is damaged, resulting in abnormal sound due to incomplete separation of clutch plates. Remove the clutch and replace the release bearing.

Common abnormal noise of automobile

1, transmission abnormal sound. The abnormal sound of the car appears at idle speed, and disappears when the clutch pedal is pressed, which proves that the bearing in the gearbox is worn.

2. There is abnormal noise in the engine compartment. The sound produced by engine vibration is very common and normal. But if it is the shrill scream of the belt, it is generally caused by the belt slipping; If metal parts rub violently, the general reason is that the bearings of generator, water pump and steering booster pump are damaged.

3. The steering wheel is abnormal, which is usually caused by the friction between the steering rod and the aging ball joint rubber sleeve.

4. Abnormal sound of suspension is usually caused by aging and falling of rubber bushing between shock absorber and connecting rod.