f150 whining noise, fan belt maybe?

Jarad

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I have a 2006 f150 with the 5.4 trition v8, and when i start it on a cold morning (20 degrees), it makes a high pitched whining noise, what is this.
 
Yes. Most new vehicles use 'serpentine' belts. (the wide flat belts) and while they are very good belts they tend to be more prone to noise. Check the belt and make sure the auto tensioner and any idler pulleys are good. If all is good and the belt is running straight then you probably need a new belt.
 
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