ECT/EOT Temps - Ford Powerstroke Diesel Forum
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Old 04-16-2013, 04:36 AM
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ECT/EOT Temps

I have been monitoring my ECT and EOT's. The ECT is 190 (New Motorcraft Thermostat) EOT is running up to 232. I back flushed my oil cooler this weekend and could get water through it but temps are still way off. I have a new oil cooler etc. ready to install but I just don't know why the oil temp wont come done since I have what I believe is a clear passage through my oil cooler. any comments would be appreciated. I assume its time to change oil cooler.

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Old 04-16-2013, 05:45 AM
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...Still time to change your cooler. If running water through your bad cooler fixed the problem guys wouldn't be purchasing new coolers. The snot-like silicates and grit coat those passages preventing heat transfer.
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Old 04-16-2013, 06:34 AM
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Oil cooler is most likely plugged. Check ECT and EOT temps after engine cools off overnight. They should be the same before you start the truck, if they are the same your oil cooler is plugged. Don't wait to long because the reduced coolant flow through it will cause higher egr cooler temps and can cause it to burst.
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Old 04-16-2013, 07:01 AM
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Thanks, I guess I will start getting into it tomorrow
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Old 04-24-2013, 01:50 PM
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What was the outcome? Sounds like my issue.
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Old 04-24-2013, 05:12 PM
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mine is kinda opposite, both of mine stay on the cool side.
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Old 04-24-2013, 06:09 PM
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Mine stay on the cool side too, even running my performance tune I never seem to go above 288* for both EOT and ECT. I don't find that to be a problem at all though, somehow I feel I got lucky and my coolers are going back, but then again I get the Diesel Emissions cleaning every 2 years where it just burns out the soot and such.

Unfortunately all of my problems evolve around my FICM and most recently..my oil pressure not reading properly. Still major issues, but at least I can count on my coolers to last a bit longer
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