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2005 Ford Expedition whistling noise

Tiny
JOFER1965
  • MEMBER
  • 2005 FORD EXPEDITION
Noises problem
2005 Ford Expedition V8 Two Wheel Drive Automatic 78.000 miles

I get a whistling noise coming from under the hood. It is there when I hit the gas pedal and it gets louder as speed increases. When idle, though, I don't hear it. It follows the acceleration of the vehicle. I was told it might be the alternator. Any ideas?
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Thursday, March 4th, 2010 AT 3:47 AM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,267 POSTS
Chances are it is one of te belt driven accessories. THe honly thing you can do is remove the belt start the engine, and see if it stopped.
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Wednesday, March 10th, 2010 AT 8:12 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,267 POSTS
I forgot to add:

NOTE: Only run the engine for a few seconds without the belt. It will overheat and cause additional damage to the engine.
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Wednesday, March 10th, 2010 AT 8:42 AM

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