Every motorist is well aware that the car should not emit any extraneous noise. from their nodes with the exception of those that appear as a result of normal functioning aggregates. If there are any strange suspicious noises coming from the wheels, then it's time to check the chassis. However, it may turn out that the point is not at all in her. Here are three more popular causes of extraneous sounds.
So, if we immediately exclude the possibility of noise from the wheels due to problems associated with the chassis, then among the most common problems there are only three reasons. It is with them in 9 out of 10 cases that the masters at the service station are faced. Let's figure out what you should pay attention to before asking for highly qualified help.
The “controlled suspension”, a unit used to damp the pump pressure pulsations, can make noise. Most often, a strange hum appears directly while the car is moving. The main culprits for the appearance of extraneous sounds are the hoses of the lines of the "adaptive suspension" system. It is also worth noting that even after repairs, the noises can continue for some time before they disappear.
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Another most common cause of wheel noise is, of course, the bearings of the attachment of the power unit of the car. In fact, they should be checked first after checking the chassis. In most cases, problems arise in the electric generator or the pump of the cooling system. Due to the fact that the listed units are (as a rule) in the lower part of the engine, then during their failure an erroneous impression is created that the noise comes from the wheels.
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Last but not least, what to check is the transmission mount. If the pillow fixing the gearbox has outlived its usefulness, then it can also cause the appearance of extraneous noise. Often the problem arises along with the weakening of the fasteners there.
Continuing the topic, you can read about 5 positive tips to help you significantly extend the life of the battery.
A source: https://novate.ru/blogs/010420/53992/