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Old 12-07-2011, 04:47 PM
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Scangauge help or Running very cool

I got my Scangauge today and i set it up to show EOT. It already had WT for what i think is ECT. My WT never shows above 177 while driving, at one time it hit 182. My EOT got to 195 and holds. So I'm wondering is the scanguage reading wrong or do I have a bad thermostat. Am I reading the wrong Gauge?
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Old 12-07-2011, 05:01 PM
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your t-stat is bad.. Unless you didn't drive it much. I only drive 5 mi to work every day and when it's below 60 deg I can't get the truck over 180..
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Old 12-07-2011, 05:17 PM
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I drove it 45 miles. The two temps stay very close to each other until about 175 then the EOT climbs to 195. I just thought it was strange that the EOT is 195 which i what temp i would think the T-stat needs to be.
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Old 12-07-2011, 06:26 PM
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Tstat is bad. Super easy to replace.
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Old 12-07-2011, 06:34 PM
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Glad to here that. From what im reading Motorcraft is the only way so ill stop by Ford on the way home tomorrow and pick one up. Do I need to drain the coolant?
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Old 12-07-2011, 07:02 PM
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Drain 2 gallons then pull the intake and upper radiator hose. Then just unbolt the Tstat and pull it out. Reinstall the new Tstat with oring and then install hose. Refill coolant and run the truck. Top off coolant and recheck for a couple days to make sure that it doesn't go down. That's how I did it at least.
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Old 12-07-2011, 07:07 PM
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While I have it out i wonder if i should do a coolant flush and put the cat coolant in it? It just had the flush done at Ford in June when the head gaskets were replaced. I have a coolant filter on it.
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