The power steering system on an Oldsmobile Alero is designed to build up hydraulic pressure using fluid to make steering maneuvers easy. Power steering systems are designed as a closed loop system where air does not belong. When air enters the power steering system your Alero can become increasingly difficult to maneuver.
The first sign of air entering your power steering system is normally a distinct noise coming from under the hood during turning maneuvers. Some identify this sound as a whining noise while turning the steering wheel in any direction. After eliminating the source of the air, most commonly a leak in the power steering pressure hose, it is time to bleed the power steering system.
Jack up each side of the car and place jack stands underneath the chassis. Place a set of wheel blocks behind the rear wheels to prevent the car from rolling backward. It isn't necessary to jack the car high in the air as you aren't going to be under the vehicle. It is only necessary to raise the tires a few inches off the ground to make the bleeding process easier.
Check the fluid level in the power steering pump reservoir. If the fluid level is low add a small amount of fluid. It is important not to over fill the system. Add the correct fluid type by referring to your Alero owners manual.
Apply a quality penetrating oil to the bleed valve located on the power steering pump. Attach a clear hose to the bleed valve, making sure to attach it firmly. Secure the hose to the bleed valve using a small clamp. This hose will be used to run the power steering fluid back into the power steering pump reservoir.
Start the Alero's engine. Crack the bleed valve open using a crescent wrench. Turn the steering wheel all the way to the right and then turn it all the way back to the left. Repeat this process until steering becomes easier. Check for bubbles or frothy power steering fluid which indicates quite a bit of air in the lines. The fluid will settle as the air is bled out of the system. Fill the power steering pump reservoir, replace the cap and close the bleed valve.
Take the car off the jack stands and take it for a test drive. You should notice a vast improvement in maneuverability. If the Alero is not easier to steer or the power steering pump is still noisy, you may need a replacement pump.
