NUbira II Power steering pump

[gianfranco]

HI, I just noticed that when I have the A/C on, and the revs goes to idle a strange sound in the engine compartment. I made further investigation and it seemed that the serpentine belt was oldie, and becauase of that was loose enough to make this noise. I replaced the serpentine belt, and the noise continues. And it only happens with the AC on (I assume that it's beacuse the belt load is bigger and this load make the noise appear).

I made further observations and I heard the noise coming from the power steering pump. I stopped the engine and I see tha the steering pump puley has some freeplay, and that could be the cuase of the sound. I read in the reparation manual that the pump isn't serviceable. Does anybody has this problem?

Thanks