Coolant cooling too much after change?? - Ford Powerstroke Diesel Forum
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Old 01-03-2014, 10:50 AM
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Coolant cooling too much after change??

A few weeks ago i had my oil cooler orings leaking so i decided to do a coolant flush as the same time while i was in there anyway. I also replaced the t-stat(Stant 205) and housing. I totally flushed the system and refilled with fleet charge concentrate and topped off with distilled water just like your supposed to.

Well since then my temps wont even get into the "normal" part of the dash gauge and before it would at least get into the "normal" part and my heat would toast you out and now it barely is enough to thaw out your fingers after a 30 min drive(50/50 interstate/city).

I know, i know, the dash gauge is just a dummy light blah blah blah but if you compare the before and after on top of the non existant heat theres obviously something up. I pulled the t-stat and heated it up and it opens and closes just like it should and while i had it out i drilled a tiny hole to help evacuate the trapped air and still after a few weeks it still doesnt get up to proper temps. What gives??

Does the new coolant cool more efficiently than the probably original tired green coolant that was in it? Or is the winter just taking that much toll on it. Guys on here swear up and down that a winter front is unnecessary but im thinking of trying it just to see
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Old 01-03-2014, 10:54 AM
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Maybe the heater core isn't working properly
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Old 01-03-2014, 10:56 AM
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Originally Posted by fordmandan87 View Post
Maybe the heater core isn't working properly
How would the heater core affect operating temps?
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Old 01-03-2014, 11:00 AM
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It wouldn't but I was spitballin. Try blocking off the grill with some cardboard to see if that helps
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Old 01-03-2014, 11:02 AM
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Originally Posted by fordmandan87 View Post
It wouldn't but I was spitballin. Try blocking off the grill with some cardboard to see if that helps
Well i have a winter front i made this summer, havent tried it yet but ill tell you that if i really get on it going up a steep hill i can get the temp to come up and the heat is nice and toasty
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Old 01-03-2014, 11:06 AM
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I'm gonna guess the 205 degree thermostat is the root cause.. Try your winter front and get back to us
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Old 01-03-2014, 11:10 AM
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Fan clutch isn't staying engaged is it?
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Old 01-03-2014, 11:22 AM
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Quote:
Originally Posted by fordmandan87 View Post
I'm gonna guess the 205 degree thermostat is the root cause.. Try your winter front and get back to us
That would make the truck run hotter if anything.

Quote:
Originally Posted by dhanna6powerstroke View Post
Fan clutch isn't staying engaged is it?
Well now what does that mean because in every vehicle ive ever owned or seen the fan runs 100% of the time but after reading on threads here it sounds like that isnt right? Is there a difference between spinning and being engaged?

Also why would it start just right after flushing? Its a mechanical clutch so its not like i coulda messed with the wiring while in there
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Old 01-03-2014, 12:15 PM
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They all will spin some but doesn't mean the clutch is engaged. Shut the truck off and grab the fan and try to rotate it. It should have some resistance but should turn. If you can't turn it with minimal effort then your clutch may be your issue.
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Old 01-03-2014, 12:20 PM
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Quote:
Originally Posted by dhanna6powerstroke View Post
They all will spin some but doesn't mean the clutch is engaged. Shut the truck off and grab the fan and try to rotate it. It should have some resistance but should turn. If you can't turn it with minimal effort then your clutch may be your issue.
I am able to spin the fan fairly easy, as in a light to medium push but its not like im having to put any umph into it for it to spin.
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