Bad Thermostat?? - Ford Powerstroke Diesel Forum
 
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post #1 of 10 Old 12-10-2011, 02:50 PM Thread Starter
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Bad Thermostat??

Ok so today it was 10 degrees here in Wisconsin and I not could get my truck to go above the 140 degrees on EOT and the coolant read 135. So this whole time I was not getting much heat at all if any. I was going to change out the thermostat tomorrow and see if that helps. Any thoughts?

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post #2 of 10 Old 12-10-2011, 03:04 PM
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replace the thermostat
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post #3 of 10 Old 12-10-2011, 04:52 PM
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Only go back with a Ford t/stat because when they fail, they fail open plus i would get a new o-ring 3C3Z-8255-AA Thermostat Housing O-ring
3C3Z-8575-AA Thermostat with housing

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Last edited by 2 stroker; 12-10-2011 at 06:16 PM.
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post #4 of 10 Old 12-10-2011, 04:57 PM
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Go motorcraft for a new thermostat. Comes with a new housing.

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post #5 of 10 Old 12-10-2011, 09:38 PM
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Quote:
Originally Posted by forddieseldoctor View Post
Go motorcraft for a new thermostat. Comes with a new housing.
O-ring is included with that kit by the way
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post #6 of 10 Old 12-10-2011, 09:47 PM
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i just replaced mine over the thanksgiving holiday and you might as well replace the temp sensor too. i paid like 65 for both the thermostat and the sensor both from ford. only use the ford thermostat.

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post #7 of 10 Old 12-23-2011, 01:51 PM
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i had the same problem but mine would not go over 160 put a new tstat in same problem both ect and eot are the same will not go over 166 any ideas
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post #8 of 10 Old 12-23-2011, 06:39 PM
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How are you monitoring your ect and eot?

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post #9 of 10 Old 12-24-2011, 05:34 AM
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edge cs and the factory gauge reads low and i put a mech gauge in the degas bottle all read no higher then 170 (this all happened after i washed my truck) figureing i got some thing wet i let it dry out for a day same
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post #10 of 10 Old 12-24-2011, 05:42 AM
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So....what did you figure out OP?

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