04 Ford F150 4x4 makes a whining noise?

ladiekiller

New member
04 Ford F150 4X4 makes a humming or whining sound when I let off the gas between 45-55mph. Does any one know what may be causing this Noise?
 

adam

Active member
Does it ONLY happen when you let off the gas? Cause i had a loud humming noise on my ford explorer and it turned out to be the idle control valve. It would come and go at random times.
 
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