Squealing sound when turning steering wheel all the way?

2010 VOLVO XC60
130,000 MILES • 3.0L • 6 CYL • TURBO • 4WD • AUTOMATIC
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YK16
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When turning the steering wheel fully to either side there's a screeching noise coming from the serpentine belt area.
Any ideas?
Thank you.
May 14, 2024 at 8:17 PM
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STEVE W.
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When you turn that sharp and the steering wheel stops the power steering pump puts a larger load on the belt because the pump pressure goes way up. If the belt is worn at all they can squeal under that load. If the belt is quiet the rest of the time and only squeals with the steering at full lock it becomes a choice, you can replace the belt and see if the new one also squeals under that load, or just avoid turning that sharp. If the belt is more than a few years old changing it and the tensioner might be the better option.
https://www.2carpros.com/articles/replace-serpentine-belt
May 15, 2024 at 6:48 AM
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YK16
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Once Im replacing the belt and tensioner should I replace the idler pulley as well?
May 15, 2024 at 6:58 AM
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STEVE W.
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
Not unless it's noisy.
May 15, 2024 at 8:04 AM
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YK16
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Okay. Thank you!
May 15, 2024 at 8:55 AM
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STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
You're welcome.
May 17, 2024 at 5:19 AM
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