I just replaced my powersteering pump, Pulley, and Serpentine belt, just a 3 days ago. Now its 25*F where i live and now when ever i turn the car on the pump hummmmmmss like its crying for help! This only happens when its cold, but when it warms up it doesnt go away but it is still noticeable.

I bled the pump just last night and it didnt do it that much after that, but the next morning it came back. I dont want to put LuCas Stop Leak, and thicken that Fluid and Mess my new pump up. I just recently bought Prestone
"Powersteering Fluid +Helps Stop Squeals". I dont know if i should mess with the fluid or just let the pump break in a little bit, guessing because its a new pump?

Also I repleaced my timing belt, water pump, Thermostat, Coil Packs, Spark Plugs, a couple months before this... I dont know what else could be a Problem now...