Yesterday my serpentine belt started squeaking again. I replaced the belt 4 weeks ago with a new Motorcraft one. The old belt looked fine which confused me on why it was sqeaking. 2 days ago on my way home, I slammed on my breaks to test them out and once I let off of the breaks the serpentine belt was squeaking, increasing with the RPMs. (Which made no sense unless I dislodged the PS pulley). I took off the belt again and checked the pulleys, they all seem fine besides the Power steering pulley, which I can pull in and out 1-2mm. Is this normal? I feel like this is causing the belt to ride on one side of the water pump pulley resulting in a squeak. The pulley had play like this in it since I replaced the belt, which confuses me on why it just started squeaking recently. Does anyone have any ideas? Thanks, Josh.