If your power steering system isn't working properly, there are a few things you can do to try and fix it. First, check the fluid level in the reservoir and add more if necessary. If that doesn't work, you may need to bleed the system of air bubbles. To do this, disconnect the return hose from the power steering pump and have a helper start the engine while you hold a catch basin under the open end of the hose. Once fluid starts flowing out of the hose, reattach it and have your helper turn off the engine. Check the fluid level again and top off if necessary. Finally, if neither of these solutions works, you may need to replace your power steering pump.