EOT and ECT high?

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Jul 1, 2017 | 06:11 PM

cruzer17

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Junior User

Joined: Oct 2010

Posts: 76

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From: Palmer, Alaska

EOT and ECT high?

Just curious if you guys would look at my AE numbers here and tell me what you think. First thing that stands out to me is my EOT and ECT seems high. I'm in Alaska and the outside temp is only 68. I was doing some testing after having a run, die and no start situation. Did the ice test on the IPR and that did the trick to get me home after a few times. Replaced that and seems to be running fine. Also, I'm currently running a 203 thermostat. Is this the best one for my situation? I routinely tow a 13500 lb. boat at sea level to sometimes 2500ft. One attachment is in Stock tune and the other is in 40hp tow. Are the ICP numbers looking good?
Ford-PowerStroke 7.3L-2002-July 01 2017Stock.csv

Ford-PowerStroke 7.3L-2002-July 01 2017 tow.csv

Jul 1, 2017 | 10:21 PM

aawlberninf350

It's a Van Gogh

Joined: Feb 2010

Posts: 7,813

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From: Elk Grove, CA

EOT in the 212 range is probably normal for a 203* thermostat. I don't have one, but higher EOT is typical for those, and the main reason people don't like them. Me personally I would not fret about that temp. Given the stability of modern oils, plus you being in Alaska, having oil warmer than Ford specs is likely to be a good thing much of the year.

ECT is not reported to the PCM on AT equipped trucks, you can ignore that. Freaks everybody out first time they see that giant number. Coolant temp sensor only goes to dash on AT trucks. PCM relies on oil temps to make calculations. Manual trucks, however, do report coolant temp to the PCM. Go figure.