GUR is buzzing

What to produce if buzzing power steering? This question is periodically asked by most car owners in whose cars this system is installed. What are the causes and consequences of failure? And is it worth paying attention to it at all?

Reasons why is the power steering buzzing, maybe several. Extraneous sounds indicate a clear breakdown in the control system. And the sooner you fix it, the more money you will save and not put yourself at risk of getting into an emergency with a faulty steering system in your car.

Power steering device

Causes of the hum

An unpleasant hum of the power steering can occur under various circumstances. Let's dwell on the most basic reasons why the power steering is buzzing when turning:

1. Low liquid level in the power steering system. You can check this visually by opening the hood and looking at the oil level in the power steering expansion tank. It must be between the MIN and MAX marks. If the level is below the minimum mark, then it is worth adding liquid. However, before that, it is imperative to find the cause of the leak. Especially if a little time has passed since the last topping up. usually, a leak appears at the clamps and at the joints. Especially if the hoses are already old. Before topping up, be sure to eliminate the cause of the leak..
2. The inconsistency of the filled fluid with the one recommended by the manufacturer. This can cause not only hum, but also more serious malfunctions. also hum power steering in winter maybe due to the fact that the liquid, although it meets the specification, is not intended for operation in special temperature conditions (with significant frosts).

   Dirty power steering fluid

3. Poor quality or contamination fluids in the system. If you purchased “singed” oil, then it is likely that after some time it will lose its properties and the power steering will start to buzz. usually, along with the rumble, you will feel that turning the steering wheel has become harder. In this case, be sure to check the quality of the oil. As in the previous case, open the hood and look at the condition of the fluid. If it is significantly blackened, and even more so, crumpled, you need to replace it. Ideally, the color and consistency of the oil should not differ much from new. You can check the condition of the liquid "by eye". To do this, you need to draw a little liquid from the tank with a syringe and drop it onto a clean sheet of paper. Red, magenta burgundy, green, or blue are allowed (depending on the original used). The liquid should not be dark - brown, gray, black. also check the smell coming from the tank. From there, it should not pull with burnt rubber or burnt oil. Remember that fluid replacement must be carried out in accordance with the schedule approved in the manual of your car (usually, it is changed every 70-100 thousand kilometers or once every two years). If necessary, change the oil. You will find a list of the best fluids for the power steering system in the corresponding material.
4. Air ingress into the system. This is a very dangerous phenomenon that is harmful to the power steering pump. Check for foam in the expansion tank of the hydraulic system. If it does, then you need to bleed the power steering or replace the fluid.
5. breakage of the steering rack. It can also cause hum. It is worth conducting a visual inspection and diagnosis. The main signs of rack failure are a knock in its body or from one of the front wheels. The reason for this may be the failure of the gaskets and / or damage to the anthers of the steering rods, which can cause leakage of the working fluid, dust and dirt on the rail, and knocking. Be that as it may, it is necessary to carry out its repair with the help of repair kits sold in car dealerships. Or ask for help at the service station.
   Do not drive with a defective steering rack, it may jam and cause an accident.
6. Loose power steering belt. Diagnosing this is pretty easy. The procedure must be performed after the internal combustion engine has worked for some time (the longer, the easier it is to diagnose). The fact is that if the belt slips on the pulley, then it becomes hot. You can verify this by touching it with your hand. To tension, you need to know how much force the belt should be tensioned with. If you do not have a manual and you do not know the effort, go to the service for help. If the belt is excessively worn, it must be replaced.
7. power steering pump failure. This is the most annoying and costly breakdown. Its main sign is an increase in the effort with which you need to turn the steering wheel. The reasons that the power steering pump is buzzing can be various failed parts of the pump - bearings, impeller, oil seals. You can find methods for diagnosing and repairing power steering in another article.

Buzzing power steering on a cold

Troubleshooting power steering and steering rack

There are several reasons why the power steering is buzzing on a cold one. The first is what goes air suction through low pressure lines. To eliminate it, it is enough to put two clamps on the tube going from the tank to the power steering pump. In addition, it is worth replacing the ring on the suction pipe of the pump itself. After installing the clamps, we recommend that you use an oil-resistant sealant, which you need to lubricate the clamps and joints.

it is also possible to conditionally single out one reason, the probability of which is low. Sometimes there are cases when insufficient (poor-quality) pumping of the power steering system. In this case, an air bubble remains at the bottom of the tank, which is removed with a syringe. Naturally. that its presence can cause the indicated hum.

Elimination methods can be replacing oil hoses and / or rails, replacing the power steering pump, installing additional clamps on all hoses in order to exclude air from entering the system. you can also do the following:

• replacement of the sealing ring on the supply spout of the expansion tank;
• installation of a new hose from the tank to the pump using an oil-resistant sealant;
• carry out the procedure for expelling air from the system (when performing the procedure, bubbles will appear on the surface of the liquid, which need to be given time for them to burst) by turning the steering wheel on a not running engine;

Also, one repair option is to replace the O-ring in the power steering pressure suction hose (and, if necessary, the hose itself and both clamps). The fact is that over time it loses elasticity and becomes rigid, that is, it loses elasticity and tightness, and begins to let the air that enters the system, causing knocking and foam in the tank. The way out is to replace this ring. Sometimes a problem may arise due to the fact that it is not easy to find a similar ring in a store. But if you find it, be sure to replace it and put it on the mount and lubricate with oil-resistant sealant.

For some machines, a special hydraulic booster repair kit is on sale. In case of problems with this unit, the first step is to buy a repair kit and change the rubber gaskets that are included in it. Moreover, it is advisable to buy original sets (especially important for expensive foreign cars).

Power steering pump bearing

also need to follow lack of dirt in the system fluid. If it is present even in small quantities, over time this will lead to wear of the parts of the power steering pump, due to which it will start to make unpleasant sounds and work worse, which will be expressed in an increase in effort when turning the steering wheel, as well as a possible knock. Therefore, when changing the fluid, be sure to check if there are any mud deposits at the bottom of the expansion tank. If they exist, you need to get rid of them. Check the filter in the tank (if it has one). It should be relatively clean and intact, fit snugly against the walls of the tank. In some cases, it is better to replace the entire filter tank than to try to clean them. also in this case, you need to remove the rail, disassemble it, rinse it from dirt, and also replace the rubber-plastic parts. To do this, you need to use the mentioned repair kit.

Unpleasant sound may be emitted power steering pump outer bearing. Its replacement is carried out easily, without the need for a complete disassembly of the assembly. However, sometimes it is difficult to find a replacement for him.

There are special additives that are added to the power steering fluid. They eliminate the hum of the pump, relieve stress on the steering wheel, increase the clarity of the power steering, reduce the vibration level of the hydraulic pump, and protect system parts from wear when the oil level is low. However, car owners treat such additives differently. They really help some, they only harm others and bring the time to replace the power steering pump or replace it.

Therefore, we recommend that you use additives at your own peril and risk. They only eliminate the symptoms of a breakdown and delay repairs to the pump or other elements of the power steering system.

When choosing a liquid, pay attention to its temperature characteristics, so that it works normally in significant frosts (if necessary). Because the high viscosity oil will create obstacles for the normal operation of the power steering system.

Buzzing power steering on hot

If the hydraulic booster is buzzing when hot, then there may be several problems. Consider several typical situations and methods for their solution.

• In the event that during the warm-up of the internal combustion engine vibration of the steering wheel begins, it is necessary to replace the pump or repair it using a repair kit.
• When a knock appears on a warmed-up internal combustion engine at low speeds, and disappears at high speeds, this means that the power steering pump is becoming unusable. There can be two ways out in this case - replacing the pump and pouring a thicker liquid into the power steering system.
• If you have filled the system with counterfeit liquid, this may cause it to will lose its viscosity, respectively, the pump will not be able to create the desired pressure in the system. The way out is to replace the oil with the original one, after flushing the system (pumping with fresh liquid).
• steering rack failure. When heated, the fluid becomes less viscous and may seep through the seals if they are damaged.

Remember that it is better to use the original liquid. This is evidenced by the experience of many car owners. After all, buying counterfeit oil can cause costly repairs to the elements of the power steering system.

Power steering hums in extreme positions

Do not turn the front wheels for a long time

It should be borne in mind that when the wheels are turned all the way, the power steering pump operates at maximum load. Therefore, it may make additional sounds that are not a sign of its breakdown. Some automakers report this in their manuals. It is important to distinguish between emergency noises associated with malfunctions in the system.

However, if you are sure that the sounds that appear are the result of a breakdown in the system, then you need to diagnose. The main reasons that the power steering is buzzing in extreme positions are all the same reasons listed above. That is, you need to check the operation of the pump, the fluid level in the expansion tank, the tension of the power steering belt, and the purity of the fluid. the following situation may also occur.

Usually in the upper part of the gearbox there is a valve box, which is designed to control hydraulic flows. When the wheel is turned to the extreme position, the flow is blocked by the bypass valve, and the liquid passes through a “small circle”, that is, the pump works on itself and does not cool. This is very harmful to him and is fraught with serious damage - for example, scoring on the cylinder or pump gates. In winter, when the oil is more viscous, this is especially true. That's why do not keep the wheels turned out to the stop for more than 5 seconds.

Power steering hums after replacement

Sometimes the power steering starts to buzz after an oil change. Unpleasant sounds can be caused by the pump if the system is thinner oil was filledthan it was before. The fact is that between the inner surface of the stator ring and the rotor plates, the output increases. vibration of the plates also appears, due to the presence of roughness of the stator surface.

in order to prevent such a situation, we advise you to use the oil recommended by the manufacturer. This will save your machine from breakdowns in the system.

a hum may also occur after replacing the power steering high pressure hose. One of the reasons may be a poor-quality hose. Some service stations sin in that instead of special hoses designed for high pressure and work in the power steering system, they install ordinary hydraulic hoses. This may cause airing system and, accordingly, the occurrence of hum. The remaining reasons are completely similar to the cases listed above (knocking on cold, hot).

Power Steering Tips

in order for the hydraulic booster to work normally and not knock, you need to follow a few simple rules:

• Monitor the oil level in the power steering system, top up and change it in time. Also, check its status. There is always a risk of buying a low-quality liquid, which becomes unusable after a short time of operation (check its color and smell).
• Don't delay too long (more than 5 seconds) wheels in end position (both left and right). This is harmful to the power steering pump, which operates without cooling.
• When parking a car always leave the front wheels in a level position (straight). This will remove the load from the hydraulic booster system during the subsequent start of the internal combustion engine. This advice is especially relevant in cold weather, when the oil thickens.
• In the event of a malfunction with the power steering (hum, knock, increased effort when turning the steering wheel) don't delay repairs. You will not only eliminate the breakdown at a lower cost, but also save your car, you and your loved ones from possible emergencies.
• Constantly check the condition of the steering rack. This is especially true of the condition of anthers and seals. So you will not only extend its service life, but also save money on expensive repairs.

Hack and predictor Aviator

Remember that at the slightest sign of a breakdown in the steering of the car, and in particular, the power steering system, you need to carry out diagnostics and repair work as soon as possible. Otherwise, at the critical moment you risk losing control of the carwhen the steering fails (for example, the steering rack jams). Do not save on the condition of your car and the safety of you and your loved ones.