2013 explorer sport whining noise

[rjs09gtr]

2013 explorer sport all stock with 55k miles just started making a whining noise. It’s loud when started and does increase when on the throttle. I haven’t found any leaks and no check engine light. Any guesses? See video link below

Explorer whine video

 

[Flashflood]

Sounds like an old ford power steering pump. But I know those are electric power steering.

 

[boominXplorer]

Got a unhappy bearing on the belt drive somewhere. I'd pull the belt and spin the pulleys. Tensioner pulley is my wild guess.

 

[rjs09gtr]

Changed the tensioner and belt and no more noise! Thanks for the help guys!