Im having trouble with my power steering system. When i start my car up after its been sitting for a while, the pump. starts whinning and making bubbles. The noise and the bubbles go away aftet i shut the car of and let it sit for five to ten minutes. I flushed the system out already also... i just cant figure it out. Any help will be appriciated....

 

Sounds like the pump is getting weak. Same thing happened to me i just changed it out to solve the problem.

 

if you just flushed the system u prob. still have air in the system just keep toping it off and it will bleed all the air out its self. the more the car is running

 

If you take a perfectly good operating PS system and pinch the low pressure line into the pump with a set of vice grips so as to reduce the size of the hose......you will hear a high pitched wine when turning the wheel. That is the pump cavitating. So input flow resistance causes this problem. So where is the restriction in your system? Most probably in the resovoir where they put that peminant metal screen filter. Takes years to fill up and clog.

Take the res off and back flush it with carb cleaner and soap and water and back flush with water. Dry it out with heat and the noise will be gone if you got the screen clean. Or have it "dipped" at the repair shop for 5 bucks. or buy a new reservoir.

My leak turned out to be a split in the low pressure hose that feeds the pump. Tiny split on the underside of that hose took a year to find.

The leak in the low pressure side was also where air would enter the system due to the res internal filter being plugged. That condition puts a suck on that hose from the ps pump to the outlet port on the res. Air will enter but very little fluid will come out.

 

The resevoir is probably dirty as mentioned.

The screen inside the resevoir (where you put the fluid) is probably clogged with ****. The best method is to remove it and clean it by back flushing.

If you don't want to do that, you can clean it while it's on the car. You have to be REALLY careful if you decide to do this. One wrong move and you will poke a hole in the screen and be screwed.

It's easy to remove anyway, so just remove it and order a new o-ring for when you put it back on.