sounds like a loud fan comes, drive a little distance and it goes away, does it when i accelerate

2006 MERCURY MOUNTAINEER
65,000 MILES
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JIMBO60
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2006 Mercury mountaineer, sounds like a large fan comes on almost like the motor over revs but doesn't, watched tach.
Jun 20, 2012 at 1:08 PM
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RACEFAN966
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As I have said get back to me with the needed info ok.
Jun 20, 2012 at 2:40 PM
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LMSHELDON
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I have the same issure on 2007 Mercury Mountaineer. It has now started shifting hard when going up hills and the temp gauge will read hot. When I tap on break or accelerate to force vehicle to change gears, the temp gauge goes back to mid-range. Shop said no computer codes detected and they couldn't duplicate hard shifting nor hear the loud fan noise.
Jul 17, 2012 at 12:54 AM
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RACEFAN966
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Did you check the fan clutch?
Jul 18, 2012 at 3:38 PM