Grease is probably dried up.
Pop the bearing seal and re-grease it and see if it quiets down.
If not, you need a new tensioner.
Maybe you can just get the pulley.
Just take note that the pulley bolt is left hand threaded. __________________
1996 Ti 280k miles and still going....
1993 964 - holding on to this one
2001 Burban, 240k miles
2018 Suburban Z71
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