maybe some of the componants that drive might be bad. like atlernoator
bearing, tight or frozen  ac compressor. check if they rotate freely.

Something is out of alignment, have you had the power steering pump replaced
before?

Glenn Beasley
Chrysler tech

I had the same problem with my 1991 Dodge Dynasty.  Replaced many belts;
replaced tensioner; still squeals intermittently.  Someone told me that
on this car there was a design flaw where all the pulleys didn't line up
precisely, and that that was what caused the squeal.  I just live with
the problem.