What causes a whining sound to come from under the hood of my truck?

  • Thread starter Thread starter Dudette
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Dudette

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I notice that when I accelerate slowly I can hear a whining sound coming from under the hood. It only does it when I take off from a stop. Once it gets up to about 15 mph it stops. It isn't a loud whining, just a faint one. If I have my window rolled down I can hear it pretty good. The other day I replaced my power steering fluid, and I checked the fluid and it is still at the mark where it is supposed to be, it isn't leaking. And it did it even before I replaced the fluid.

What could cause this?
If I just have my truck idling, you can't hear it.
And everything on my truck seems to be working properly.
 
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