Squeaky belt

[Drive XR7]

I noticed the past few times I drove my GP there was lots of belt squeal.

The belts are relatively new. I examined and found them still in great condition. I examined the pulleys and found that the supercharger belt on the crank pulley is 1 rib off. It's weird. Not sure how this could happen. I'll reseat the belt but am wondering how this could happen. The belt is tight, does not seem loose.

 

[Fivefingerdeathpunch]

I always leave road debris in the back of my mind, stranger things have happened.

 

[Drive XR7]

Twice in 2 weeks the belt has slipped a rib and started squeaking again. I noticed that the tensioner does seem to move in weird positions. Like when I turn it to remove the tension it's not a straight up movement. I feels like the whole tensioner assembly is shot.

It looks like a torx nut holding the tensioner assembly on, and I probably stripped the hell out of it. Is this a torx nut or something else?

 

[Scottydoggs]

sc tensioner is held on with a 13 mm nut, use a 12 pt socket to fit inside the hole where you see the stud end.

id be looking at the two idler pulleys, if one of them has a play in it it could toss the belt.

 

[Drive XR7]

I replaced the outside idler last year when it seized. I did not replace the second closer idler or tensioner.

Will take a closer look, thanks.

 

[Drive XR7]

Replaced the tensioner assembly and smooth idler pulley, problem solved.