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Humming noise under Hood

Discussion in 'Under the Hood' started by explorer99sport, August 19, 2010.

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    1. explorer99sport

      explorer99sport Member

      Joined:
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      City, State:
      Charleston, SC
      Year, Model & Trim Level:
      99 Ford Explorer Sport
      When my explorer idles it has a loud humming noise, even with the A/C off, when i rev the engine or drive it immediately goes away. I was thinking it was the water pump, any ideas?
       
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    3. nicklebbad

      nicklebbad New Member

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      City, State:
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      95 xlt
      if its near the air intake its your IAC more than likely..
       

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