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My 1999 ford explorer makes a loud humming noise when the weather's cold, why?
1999 Ford Explorer

My 1999 ford explorer makes a loud humming noise when the weather's cold, why?

(1999 Ford Explorer)
It only happens when the weather is cold.
in Fulton, MO on December 12, 2011
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1 answer & 2 comments
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on December 12, 2011
where is the noise coming from??

Roy
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on December 13, 2011
T he noise is under the hood, but I can't point exactly where under the hood. It only makes the humming sound in very cold weather. It never happens in warm weather.
on December 13, 2011
it could the clutch fan on the water pupm. not a common failure but could be verified by removing the serp belt and see if the noise goes away.

Roy
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on December 12, 2011
where is the noise coming from??

Roy
Sign in to reply
on December 13, 2011
T he noise is under the hood, but I can't point exactly where under the hood. It only makes the humming sound in very cold weather. It never happens in warm weather.
on December 13, 2011
it could the clutch fan on the water pupm. not a common failure but could be verified by removing the serp belt and see if the noise goes away.

Roy

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