With a water pump problem, would I notice any change in running temperature? Sorry about the lack of info. The engine has been converted to a serpentine system, so it's a single 6 rib belt. It has a tensioner on it as well, but I'm wondering if these can loose their tension and need to be replaced. The fan is electric, so no problems there. I'm almost positive that the noise is coming from the alt area, as it's pretty far away from my water pump, but I'll double check to make sure. I put in a new alternator and it made the same noise, so I don't think it's a bad bearing. The new one I put in was a Ford part and not a remanufactured part so I don't think it's the bearings. The pulley spins freely with no belt so I'm not getting any resistance. Also, the amp meter I have on my battery is reading 12-14 volts, so I don't think it's over charging. I'm thinking it all might just boil down to a belt problem, since it's a custom set up with a custom length belt, so I think I'm going to take it to a place where they'll let me try a few belt sizes and see if that fixes it. Any ideas before I take it in to check are great though, as I'd love to save the time and expense by fixing it myself. Thanks for all the suggestions so far, keep them coming.
