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Old May 18, 2012 | 10:08 PM
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V10 engine temp

Today was drive my x 2000 v10 limited 4x4 114k miles). It was 90 degrees Out and was driving in light traffic going 40 and noticed my temp gauge almost up to h then dropped fast. So shut the ac off and it continue to rise and drop fast I went few more miles to where I was going checked everything could see no problems it sat for about 30mins then left on my drive back home 36 miles and had ac on and no problems stayed where it normally is. I am thinking of just replacing the belt cause I never have. Any other ideas? No wheeping from water pump. Or any smell.
 
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Old May 18, 2012 | 10:24 PM
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I dont remember where i read this but i remember, I think you migh have an air bubble in your system if the radiator fluid is right but yea
 
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Old May 18, 2012 | 10:26 PM
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I would think that the thermostat is starting to get sticky personally. It also could be a fan clutch issue. I'd try changing the thermostat first though, as they usually only cost $6 or so.

If the belt were slipping it'd be making a horrible squeal, but with over 100,000 miles it's probably a good idea to change it.
 
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Old May 18, 2012 | 10:28 PM
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found it----->https://www.ford-trucks.com/forums/1...-a-moment.html <-----found it
 
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Old May 18, 2012 | 10:47 PM
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I changed the thermostat about a year ago and I have put about 10k miles on it since then.
 
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Old May 19, 2012 | 12:21 PM
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Check your coolant level, my old Bronco does the same thing when it gets low.
 
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Old May 19, 2012 | 01:34 PM
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If your doing the belt then you might want to add the tensioner in there also.

 
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