2010 ford explorer

[Dandoom]

have a 2010 explorer has a whining noise between 60 and 65 when accelerating it stops when you let off gas at ford dealer for three days now and there best can't find the problem please help thanks

 

[asull85]

Could be a vacuum leak somewhere or your belt could be slipping.

 

[Dandoom]

Thanks they seem to think its in the rear end area