power steering fluid change Toyota Highlander

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#1
Toyota Highlander, 2003, 3L 6 cyl. engine, 72K miles
The power steering fluid was pretty dark, so I decided to change it. I disconnected the supply hose from the power steering pump, seeking to drain the hose and reservoir. This worked. I reconnected it and filled the reservoir with Dexron III ATF like the manual specified.
Now, there's a buzzing sound when the engine is running and I turn the steering wheel. There is foam in the power steering reservoir. Looks like I got air in the system. Is this bad? Will it correct itself? If not, is there a procedure for purging the air from the system?
THanks, Tim14817
 
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#2
Yes, you probably have air in the system...try this....BLEED POWER STEERING SYSTEM
Check the fluid level.
Jack up the front of the vehicle and support it with the stands.
Turn the steering wheel.
With the engine stopped, turn the wheel slowly from lock to lock several times.
Lower the vehicle.
Start the engine.
Run the engine at idle for a few minutes.
Turn the steering wheel.
With the engine idling, turn the wheel to left or right full lock position and keep it there for2 - 3 seconds , then turn the wheel to the opposite full lock position and keep it there for2 - 3 seconds .
Repeat (1) several times.
Stop the engine.
hope this helps...Jim