jb2012

For some reason both f150's I have owned eat pulley's. It seems like more than once a year I start getting an annoying whine. I have replaced both idler pulley's and tensioner pulley so far this year, but my truck is still whining (louder/higher pitched with higher rpm) and I think I have found the problem to be the water pump pulley. But I cannot find a replacement part for the water pump pulley? when I take the fan and belt off, I can spin it and hear the grinding noise. Any help on finding that part?

jb2012

second thought, I'm leaning towards an alternator pulley