ECT seems kind of low. - Ford Powerstroke Diesel Forum
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Old 05-30-2011, 09:19 AM
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ECT seems kind of low.

My ECT according to my SGII, won't go over 190, at least not for very long. At 65mph steady cruising, I can see it rise to 190, then the tstat opens, and it will drop to 188-186 and stay in that range. It will slowly work its way back up to 190, but drop back down.
This is a new tstat that went in after the coolant flush/change about 3 weeks ago. The tstat came from Tousley's, along with my blue spring and banjo bolts.
Just to throw this in, the EOT tracks the ECT, about 8-10 delta, so not worried about that side at this time.
Should I consider getting one of those radiator bibs to keep the temps up?
If I work it a bit, steep climb, etc., the ECT will rise up above 190.
Thanks
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Old 05-30-2011, 09:47 AM
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Outside temp? My ECT stays close to 190 as well but if EOT rises then ECT follows. Doesn't sound out of the normal if ambient temps aren't real hot and your EOT doesn't run away from you ECT temps....
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Old 05-30-2011, 10:09 AM
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Outside temps were around 45-50F. The temps rose and fell together.(ECT-EOT)
With all the chatter about ECT needing to be over 190, just a bit concerned that my new tstat is bad.
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Old 05-30-2011, 10:39 AM
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I am in Dallas and during the winter (that temp range you mentioned) my EOT would be in the 195 range while my ECT would be in the 188 range. Now that it is summer and 100* outside, mine are up to 210 on the EOT and 203 for ECT.

These temps are after an oil cooler rebuild in Sept. and coolant flush in Jan.
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Old 05-30-2011, 10:46 AM
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Quote:
Originally Posted by astroinhouston View Post
I am in Dallas and during the winter (that temp range you mentioned) my EOT would be in the 195 range while my ECT would be in the 188 range. Now that it is summer and 100* outside, mine are up to 210 on the EOT and 203 for ECT.

These temps are after an oil cooler rebuild in Sept. and coolant flush in Jan.
So, I am guessing don't worry, right? Just normal due to outside temps. I can live with that, just wanted to make sure.
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Old 05-30-2011, 11:11 AM
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those temps are fairly close to normal given the ambient temp.
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Old 05-30-2011, 11:24 AM
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My ect run usually from 184 to 192 I've seen it go all the way to 200.
I've been told 186-190 is normal. Wonder if I need a new t stat
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