2000 s10 squeaky belt

i have 2000 s10 with a squeaky belt. new tensioner and pulley and belt. seemed like the alternator ,power steering and ac pumps spun freely with belt off. is there something common i should look for? seems like the tensioner is taking an ocassional jerk so im wondering if somethings binding like the alternator bearing under load?

i have 2000 s10 with a squeaky belt. new tensioner and pulley and belt. seemed like the alternator ,power steering and ac pumps spun freely with belt off. is there something common i should look for? seems like the tensioner is taking an ocassional jerk so im wondering if somethings binding like the alternator bearing under load?

Check all the grooves in the pulleys for debris, make sure the belt is running "true" on all the pulleys. If the P/S pump has been replaced, it's possible the pulley was not installed at the correct depth.