did a saginaw pump / little pulley power steering conversion last year and the squealing was driving me crazy, tried several belts to no avai. finally ordered the IPOR pulley and installed this am only to make the squeal worse! At lock the pump would stop and really let out a scream. Tightened it up over and over. finally got a helper tonite and got him to turn the wheel while I watched closely. It appears that the ps pump was stopping the fan/ water pump double pulley and the squeal was coming from the alternator belt which was a little loose after getting the alt belt tight the squeal went instantly away. I feel like an idiot. But success is sweet. Now almost no noise at lock with only moderately tight ps belt. does this make sense to anybody. I guess the waterpump is just free wheeling and when the squeal was present the belt was slipping on the crank pulley. does it sound like the bypass function is working correctly in the saginaw pump?