ECT vs EOT - Ford Powerstroke Diesel Forum

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post #1 of 7 Old 02-02-2014, 05:41 AM Thread Starter
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ECT vs EOT

Just started this morning on the way to work, let the truck warm up for 15 minutes before driving it. My oil won't get over 160 and my coolant was up at 178. Was this way for my 30+ mile drive to work. What should I be looking at? Ambient temp this morning was 36. Monitoring it with an Edge CTS
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post #2 of 7 Old 02-02-2014, 09:08 AM
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You should be getting closer to 190 EOT, 180-184 ECT... May get a confirmed answer but usually that's a sign of a T-Stat issue... Fairly easy, inexpensive fix...
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post #3 of 7 Old 02-02-2014, 09:37 AM
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Originally Posted by bansheeman View Post
Just started this morning on the way to work, let the truck warm up for 15 minutes before driving it. My oil won't get over 160 and my coolant was up at 178. Was this way for my 30+ mile drive to work. What should I be looking at? Ambient temp this morning was 36. Monitoring it with an Edge CTS
Oil temp sensor is junk. Oil will never be cooler than the coolant after it is warmed up.
Double check the sensor readings after the truck has cooled overnight. The ECT/EOT readings should be within a degree or two.
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post #4 of 7 Old 02-02-2014, 12:06 PM Thread Starter
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Originally Posted by NYC F-350 View Post
Oil temp sensor is junk. Oil will never be cooler than the coolant after it is warmed up.
Double check the sensor readings after the truck has cooled overnight. The ECT/EOT readings should be within a degree or two.
They are within a degree. It went back to normal on my way home EOT was 186 and ECT was right at 182. Seems to be inconsistent. Either way I've ordered a water pump a thermostat.
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post #5 of 7 Old 02-02-2014, 12:14 PM
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Could be a dirty connection, failing sensor, chafed or otherwise compromised wiring.
Your thermostat does need attention, but having cold oil readings won't be helped by a waterpump or thermostat.
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post #6 of 7 Old 02-02-2014, 06:18 PM Thread Starter
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Hopefully the truck will be in the shop in a couple of weeks anyways getting a1 technologies headstuds and a lot of other parts I've been gathering over the last 3 months. Time to make it bulletproof.
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post #7 of 7 Old 02-05-2014, 02:33 PM
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Ive actually had my Edge CTS stay on the same EOT and ECT before, the EGT changes but the Edge got stuck and the numbers never changed. I knew it was wrong because they were both like 100. I shut the truck off and let the Edge power down restarted it and it was fine. Happened only one time.

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