We have a 03 ram 1500 5.7 hemi 4x4 quad cab. The power steering went out a couple mths ago we replaced then 2 days later loud squealing started replaced serpentine belt, stopped squealing for 20-25 mins replaced tensioner pulley still squealed then replaced alternator cause bearing seemed bad, still squealing. Noticed ac compressor engaging and disengaging checked to see if refridg is full it was, replaced compressor, now comp is working fine but still squealing??? We dont know what to do with it anymore its so frustrating the squealing is high pitched and constant right from start up gets a bit louder with acceleration, If anyone could help it would be greatly appreciated!!!

 

Why not trying lubing one thing at a time or use mechanics stethoscope