EOT vs ECT on scanguage - Ford Powerstroke Diesel Forum
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post #1 of 16 Old 12-07-2011, 04:23 PM Thread Starter
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EOT vs ECT on scanguage

I just hooked up my scanguage, loaded all the important xguages onto it and went for a hour drive down the highway at 65-70, oil temp never exceeded 150 F and coolant was around 188 the entire time, 37* outside temp. I double and triple checked the programming in the xguage. Is this about normal for the oil temps? all the threads Ive looked thru everyones at or above the 15* delta so i dont know if this is the norm or i did something wrong. I got the Xguage values right off the scanguage site so I'd assume their vales are correct, If the oil temp is correct I'm a happy camper and have nothing to worry about. Just wanted to run it by the .org crew and see what everyones thoughts are.
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post #2 of 16 Old 12-07-2011, 04:31 PM
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Something is up. An hour of driving should have your EOT at or a little higher than ECT.

Let it sit over night with a cold soak, and compare the temps. They should read nearly the same. If they are not, try entering this 00090005FFD8 in the MTH for your EOT. And recheck the 2 temps. See if that helps.
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post #3 of 16 Old 12-07-2011, 04:31 PM
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i have the stock cooler and run edge cts and it comes up 192 ECT and 190-192 EOT which is on the mark, your EOT seems low i think, unless maybe you have a Bulletproof Oil cooler and it doesnt have a t stat or so. seems off tho maybe someone who has a scanguage can chime in

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post #4 of 16 Old 12-07-2011, 04:39 PM
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I agree with 06SuperDuty, it is low unless you are running a different oil cooler and failed to inform us of this. My temps are usually 180 ECT and 188 EOT.
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post #5 of 16 Old 12-07-2011, 04:44 PM Thread Starter
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truck is stock, had head gaskets, egr, egr cooler, oil cooler done at 85k, 99k on the truck now, Ill give the new code a shot and see what happens
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post #6 of 16 Old 12-07-2011, 06:46 PM Thread Starter
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not sure what I did wrong but I went out and reloaded everything now its reading 183 EOT and 188 ECT so it looks like im in the norm. thanks for the help guys
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post #7 of 16 Old 12-07-2011, 08:04 PM
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Originally Posted by mtbxdrew View Post
not sure what I did wrong but I went out and reloaded everything now its reading 183 EOT and 188 ECT so it looks like im in the norm. thanks for the help guys
NO you are not normal something is wrong EOT is never cooler than the ECT a stock Ford t/stat starts to open at 192.2* and is fully open at 219.2* so you have a t/stat that is stuck open better than closed or you gauges are screwed up. My run ECT 192-194* EOT 200* when pulling my 5er add 10* to each and the highest i have see it ECT 218* EOT 228* pulling a 6% grade 6 miles long 90* outside and the fan sounds like a jet plane so you are running to cold if your gauges are right, even in colder weather you have to get to 192*+ before the t/stat open or it is stuck open.
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post #8 of 16 Old 12-07-2011, 08:46 PM
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Originally Posted by dieselmatt View Post
I agree with 06SuperDuty, it is low unless you are running a different oil cooler and failed to inform us of this. My temps are usually 180 ECT and 188 EOT.
Your T-stat is bad by the way.
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post #9 of 16 Old 12-07-2011, 10:01 PM
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Your T-stat is bad by the way.
Its brand new

I actually thought the same thing so I took it back and traded it for another one, same thing. It is just a different brand, not OEM, so that explains the difference on my end.
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post #10 of 16 Old 12-07-2011, 11:17 PM
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A truck that runs on the cold side will use more fuel because the computer is adjusting for it better to run warmer than cooler but not hot.
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