/ / Why does the steering wheel buzz when turning the steering wheel? Causes

Why is the steering wheel buzzing when turning the rudder? Causes

The modern car is literally "stuffed"various additional systems aimed at improving comfort. We can no longer imagine a car without an air conditioner, heated seats, electric windows and, of course, a hydraulic power steering. In short, it is called the GUR. However, this mechanism may malfunction during operation.

Reason to think seriously if the HUR buzzes whenturning the steering wheel in place. What can these unpleasant sounds indicate? Why is the steering wheel buzzing when turning the rudder? How to deal with this, we consider in this article.


The hydraulic amplifier is asteering element. Unlike mechanical systems, in this case, an additional force is created to turn the wheels, based on the hydraulic drive.

Lancer 9 buzzes when driving
The device works from the crankshaft pulley.The output of the amplifier is proportional to the speed of this pulley. That is, the more speed, the easier it is to turn the steering wheel (which contradicts the real requirements). In this regard, more expensive cars are equipped with electric assistants. They allow you to reduce the gain when typing a car speed and vice versa.

Working fluid

Those who have a hydraulic amplifier know,that the main component in it (besides the pump) is a liquid. Oil in the GUR system also has its own resource. It is not necessary to think that it is flooded for the entire lifetime. The liquid must be periodically topped up or changed completely. The latter option is more reasonable, in terms of system maintenance.

buzzing gur when turning the rudder to the stop
How often to change a little in the hydraulic systemamplifier? Many manufacturers do not regulate this figure. However, experts say that oil should be changed at least every 5 years. Every 60 thousand kilometers should be checked the level of liquid in the tank. If you do not adhere to these rules, the boom of the amplifier is possible when the steering wheel is turned.

How to determine the state of the fluid?

Look in the tank. The fluid of the hydraulic booster must have its original color (usually painted in red shade), without impurities and deposits.

buzzing hur when turning the steering wheel in place
Mud on the walls of the tank, too, should not be.Important point - when refilling, do not mix products from different manufacturers. If you do not know what fluid was previously filled, it is recommended to change it completely. The old oil will be poorly pumped by the pump. Over time, the rudder turns will become tight, and the pump itself starts to emit a characteristic sound. But this is not the only reason the GUR is buzzing when turning the rudder.


In modern cars is no longer usedworm and screw steering gear. All cars are now manned with racks. "Mitsubishi Lancer 9" was not an exception. Humming GUR when turning the steering wheel sometimes because of the reiki. What is the reason for this phenomenon?

The problem lies in the temperature differences andreagents, which in winter roads are sprinkled. Especially this problem is relevant for residents of large cities, such as Moscow and St. Petersburg. The salt falls on the rubber anthers and the stuffing box seal. As a result, they "dub", crack, and the steering gear begins to flow. After a brief parking you will find that an oil puddle has formed under the car.

why the horn buzzes when turning the steering wheel
This is the fluid of the hydraulic amplifier.Also the problem is accompanied by a rumble. After all, the level of oil in the tank gradually decreases. If you do not check it in time, you can ruin the pump. If the steering wheel is heavily hummed when the steering wheel is turned and liquid frequently vanishes, first examine the condition of the anthers. The rake should be dry.

If the problem was detected on time, everything is decidedby replacing a damaged anther or stuffing box. After this repair, the liquid stops flowing outward. In neglected cases, if the HUR buzzes when turning the rudder to the stop, the rack mechanism changes entirely.

Drive unit

The next reason is the drive mechanism.The hydraulic amplifier is driven by the crankshaft pulley. The nodes are connected by belt transmission. It should have a good fit. Otherwise, the pump pressure will be insufficient. In addition to the rumble, you will feel that the steering wheel is turning much tighter, in addition there will be an increased vibration. Check the condition of the belt.

buzzing when driving
Adjust the position of the tension roller.Usually for such works the key on 14 is used. Also check up a condition of the belt. Of course, if it breaks, the valves will not bend, as on the timing. The pump simply stops producing pressure. However, you do not need to drive with a cracked belt. If the element has scuffing and small cracks, it needs to be replaced. At the same time check the condition of the other belts (generator and timing) that are next to each other.
the horn rattles hard when you turn the steering wheel
Check how the belt bearing rotates: it should not whistle. If so, replace the element with a new one.


And the last reason that the HUR buzzes when turning the rudder is a faulty pump. This is due to ignoring the oil change regulations and improper operation of the steering.

the horn rattles hard when you turn the steering wheel
The element changes entirely, without repair kits.The pump is the most expensive part (except for the rail) in the car control system. Therefore, you need to know how to properly operate the car with power steering.

How to save GUR?

There are a number of rules that should be followed when operating a car with a GUR:

  • Do not leave the car in a parking lot with turned-out wheels, especially in winter.
  • Do not overheat the fluid in the power steering. To do this, do not wring the wheel until it stops. Leave a small gap of 5-10 degrees. The load on the pump will decrease many times, and the liquid will not boil.
  • Observe the oil level in the reservoir. If the liquid begins to go away, check the condition of the rail and rubber tubes. The leak must be eliminated.
  • Regularly change the hydraulic oil. This will save the pump and rack from premature failure.
  • Do not drive with a weakened strap. With any extraneous sounds from under the hood (often a characteristic whistle), check the tension level.


So, we have found out, for what reasons is booming GURwhen turning the steering wheel and how to prevent this malfunction. The hydraulic amplifier makes it easier to drive, especially with parking maneuvers. However, do not forget that the GUR is a separate mechanism, which uses its own oil and its drive. With proper care, this unit will please the driver with a long and quiet operation.