Safe Temperatures (EOT, ECT, EGT, Tranny, etc) - Ford Powerstroke Diesel Forum
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Old 06-17-2010, 04:47 PM
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Safe Temperatures (EOT, ECT, EGT, Tranny, etc)

I tried searching, and couldnt quite find what i was looking for.

But i have a edge insight in my truck and i monitor the EOT, ECT, EGT, transmission, and boost

what are the safe levels i should be experiencing, and what are the high temps to watch out for.

Right now, cruising at 70-75 mph with the studs and egr delete, everything else stock. I'm seeing the following

ECT 189
EOT 182
Tranny 150-185'ish
EGT 700-800 cruising, 400-600 around town and at lights


According to my paperwork from the mechanic they did replace my oil cooler, and i have read that the EOT and ECT should be within a few degrees of each other, is that correct? When i'm idling, they are within 1-2 degrees, but cruising its usually anywhere from 5-10 off. Is that normal or should i call the tech?

thanks all.
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Old 06-17-2010, 04:48 PM
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damn, i did it again, and posted in the wrong forum. Sorry guys.
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Old 06-17-2010, 04:50 PM
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Old 06-17-2010, 05:06 PM
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I still have my EGR and that's about what I see with my truck...although my oil temp is usually higher than coolant temp by 5-7*.
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Old 06-17-2010, 08:28 PM
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Quote:
Originally Posted by Fantom View Post
I still have my EGR and that's about what I see with my truck...although my oil temp is usually higher than coolant temp by 5-7*.
i gotcha, so is 5-10 difference ok? or is something not right. and i might have mixed up the numbers, i'll have to check again on the drive to work tomorrow, it could be my EOT thats higher. but any input is greatly appreciated. thanks!
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Old 06-17-2010, 08:31 PM
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Moved it for you.
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Old 06-18-2010, 08:29 AM
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Yeah I just got my insight installed and was wondering the same thing with the ECT and EOT. Right now my ECT is like 8-9 degrees higher than my EOT is that normal? I know about a 10 difference is ok but is that when the ECT is higher or when the EOT is higher?
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Old 06-18-2010, 08:38 AM
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You guys are right where you should be with your numbers

20 degrees difference between ECT and EOT for long periods is bad
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Old 06-18-2010, 09:16 AM
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thats good to know. Took some more readings.

both trips were at 1850-1900 rpm, 65-70 mph

Day one Day two

ECT 190 ECT 196-199
EOT 200 EOT 199-200

Is it more of the difference to be worried about than temps? and what are very High Oil and Coolant temps to watch for?

thanks all.
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Old 06-18-2010, 09:26 AM
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Nice temp difference, now let me ask you something what the temp differences outside ? In theory if you read temps on a day thats 88 vs a day thats 95 with a heat index of 105, your numbers are gonna be a little higher then normal, when the gap between numbers becomes more then 20 theres an issue. I have my coolant temp taped at the Oil cooler on the coolant side that temp for me is about 205-215 steady.
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