I've had a leak in my Audi's PS fluid since I got it as a used car from my Grandparents. They just told me to replace the power steering fluid every week, and doing so has worked up until a few days ago. Now, the wheel is tight by the time I reach my destination regardless of how much I put in. I'm literally running through bottles of this stuff just to get to work. The leak is on the left side of the car, pretty far back (no where near the PS fluid reservoir). On top of this, when I check the fluid after arriving at my destination, I see bubbles in the fluid. Why is this happening now? How much do you think it will cost? Thanks guys.
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Re: Power Steering Fluid Leak, boiling fluid.
Look at the steering rack on the side of the car that you think the leak is, look for the steering rack boot or gaiter, it looks like a black circular accordian type thing.
If this is bulging and leaking fluid the seal in the end of the rack is gone, this is one of the most common faults of leaking fluid and at the rate you are losing fluid, the leak is on the pressurised side of the system after the pump (the seal at the end of the rack)
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Heavy steering (not caused by neglected low tyre pressures) is usually related to a problem or failure with the power steering pump system.
Items to check on the Power Steering (PS) System
1. Is the serpentine belt slipping on the power steering pump pulley because it is old and worn and needs to be replaced? If it is slipping it will likely be slipping on other pulleys also.
2. You have allowed the power steering fluid to run low and the PS pump is starved and is sucking air. Running the fluid low will damage the PS pump and the steering rack. Low fluid in the PS reservoir is normally a sign of a fluid leak in the system. A leak could be on a system hose, in the PS pump or in the steering rack.
3. The PS pump may have failed, hence cannot produce the required pressure in the PS system, and needs to be replaced.
It means the power steering pump is no longer operating and so providing the required power assistance.
You either have a power steering fluid leak in the system and much of the fluid has been lost or the power steering pump itself has failed. You should not try and drive the car when you have this problem because the steering will be far too heavy to drive safely and because if a fluid leak has run the pump nearly dry you will cause damage to the PS pump.
The first thing to do is check the power steering fluid reservoir in the engine compartment. If it is low or empty you have a leak in the system. You can refill the system with new fluid but it will continue to leak until the leak is addressed and you will have to constantly add new PS fluid. In the case of a major leak the car will not be driveable as the PS fluid will be lost very rapidly. Without fluid you will quickly ruin the pump and you will also have no power assistance in your steering.
Usually you can see if the pump is leaking. Most times it's a hose, or in your case, I'd look real close at the rack and pinion unit that's mounted in a hard to see spot under the car. It can be leaking into the rubber boots that are on both ends of the unit, then slowly leaking out while you are driving. I would bet this is the problem as the noise you are describing happens when the system has air in it, and as you work it back and forth, it purges the air.
You've got a power steering fluid leak. The noise is the power steering pump low on fluid. I would put some Lucas Power Steering treatment in the system and refill the fluid. It won't fix the leak forever, but it will recondition the seals and rubber and buy you a lot of time.
Do you mean hard to steer your steering wheel?
If you have a noise when you are turning your steering wheel, you may have low power steering fluid. Add power steering fluid into your power steering fluid reservoir to the level required (check with your manual book). Make sure you get the right power steering fluid for Audi A4. Hope it will help
try to find exactly where it is leaking from, if it is from a seal in the power steering unit it would be wise to replace the whole unit, if it is in the hose leading to the unit you can have that replaced by a hydraulic hose doctor
The power steering leak is creating bubbles in your power steering pump which gets strained more when turning, which causes it to be louder when turning. If you know where your leak is, then fix that, then try to bleed your ps system by filling up with the cap off the resevoir and turning the steering wheel max left to max left with trans fluid. if the noise is still there then your ps pump needs to be replaced along with the ps vsv located on the side of the pump.
First, I'd try refilling the fluid. You can't use fluid off the shelf - Audi uses proprietary power steering fluid, available at dealerships (probably a VW dealer can give you the same thing) or online at www.germanautoparts.com or www.ecstuning.com. Try refilling it. The power steering fluid is cooled by a cooler behind the lower part of the bumper, and the fluid itself cools the power steering pump. If you're low on fluid, the pump may be heating up and in turn, heating the fluid. Fill it to the proper level and keep an eye on it for a couple of days and see if that fixes the problem.