Noise from pulley?

The car had a seized compressor when I bought it. I cannot remember if there was a noise from the tensioner before, my memory tells me there wasn't, but I was replacing the valve cover gasket, compressor, mounts, and since the tensioner had so much oil on it and was OEM and I know they are problematic in removing and installing because of the design so I went ahead and bought one from Amazon. I am thinking it could be from it. Only happens when the ac is off or if ac is on, but compressor kicks off. I have not fully filled it with freon so every 15 seconds or so it cycles. But it maybe the load? Usually if it happens it would with the load on not off, weird, no wobbling, belt looks good. The sound is similar to what you would hear if say a bolt is not tight enough and there is a washer behind it that has free play. But I made sure all bolts are tight.