my son replaced the alternator and after starting the car I noticed bubbles coming up out of the power steering reservoir, and a screeching noise. I tightened the clamp on power steering line, which seemed to be loose and tried to bleed it by turning the wheel back and forth. Still having problem. Do you think I should try replacing the lines? If so which one? I can not see any leaks coming from them.

 

You turn the wheel back and forth with the reservor cap removed? U should be fine if its just small bubbles and its not overflowing real bad. Take it for a ride, and recheck it.

 

This happened on my old eclipse. There was air getting into the system some where, I ended up finding a hose that was dry rotting and wasn't creating a tight enough seal. Replaced that hose and everything was fine.