Need some help… before I go completely crazy..

My 1997 Dodge 1500 4x4 5.9 – has what sounds like a bearing squeal. It starts after the engine runs for just a few minutes and only when you apply some gas and build up rpms. I first replace the belt tensioner, still there. Then listened with a stethoscope while it was squealing to the alternator and power steering pump - both did not seem to be making the noise. So, I replaced the water pump... the noise is still there.

Any suggestions?

Thanks
Lou

 

Fan clutch can do it. My buddy had a real bad one you couldnt even be by the engine when it was running it was so loud. one day when taking the rad out he grabbed the clutch and it was loose so bought a new one and the sound went away