I recently changed my AC belt on my 307 olds. And I took out the smog pump pulley along with the belt and upon putting it back the smog pump started squealing very loud and started to smell burnt and so I thought hmm maybe its just the smog pump cause they are known for seizing up. So I just put a Rebuilt one from NAPA auto parts and the b*st*rd still squeals and smells burnt and the smog pump got hot. So I am wondering what’s going on? Is there something I am not doing right? I need some help on this anyone? Thanks