Jeep jk 3.6 chirping squealing noise after warm up HELP!!!
 

Guys anyone having this problem or had it
With a jeep jku 3.6 high pitch chirping squealing noise ive changed 2 belts already idler pulleys
Tensioner pulley water pump as well but the noise is still there i dont know what to do anymore any inputs and help will be helpfull!!?
sounds exactly like this jeep on youtube

Could be bearings on the alternator. I have had this issue with a Delco alternator years ago and the bearings wore out and allowed the rotor to contact the stator inside as the clearances are really tight for electrical charging efficiency. Best way is to first spin the alternator by hand with belt removed. Another way is to wind a strong string around the alternator pulley and pull hard to get some revolutions like the old boat outboard starter cords were. Like 10 or 12 winds so that it runs in the direction it rotates when engine is running.