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Old 02-22-2012, 05:04 PM
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EOT question

Took the truck out today for a 200 mile drive on the freeway today. My speeds averaged 75mph.
My ECT was 188-192, 90% of the time it stayed at 190.
My EOT on the other hand never went over 180, and for the most part stayed around 177.

(Most of the drive was ECT-190 EOT-177)
Is it normal to see deltas like this?

Thanks any all.
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Old 02-22-2012, 08:12 PM
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Nope, not unless you have a air cooled oil cooler like the BPD. Think about it... the oil is being cooled by the coolant. The oil can never get cooler than the coolant.

When the truck is stone cold, before you start it, look at the EOT, ECT, trans temp, IAT, ambient temp ,etc... They should all be fairly close. I suspect you EOT is reading artificially low compared to the ECT.

MikeB
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Old 02-23-2012, 05:44 AM
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Thanks for the reply Mike.
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Old 03-06-2012, 07:03 PM
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My truck started doing this today...ECT and EOT warm up to 190, then the EOT drops to 183 while driving and drops even more to 174 at idle.
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Old 03-06-2012, 07:44 PM
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just what mike said. cant happen. im thinking you have a faulty sensor.
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Old 03-06-2012, 08:39 PM
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yep, I would think faulty sensor or maybe a wiring issue if the temperature tends to read erratically rather than always high or always low...

MikeB
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Old 03-07-2012, 05:19 AM
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Quote:
Originally Posted by jimmyv13 View Post
My truck started doing this today...ECT and EOT warm up to 190, then the EOT drops to 183 while driving and drops even more to 174 at idle.
Supposed to bring mine to the dealer today. Calling Hallis to see if I can shave a few bucks off the price. I haven't even dove into this issue yet. First... Gaskets, studs, blue spring, banjo bolts, coolant filter, new intercooler boot, ELC coolant, #7 injector, and hopefully no more damn money for a while!

Sent from my ADR6300 using AutoGuide.com App
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Old 03-07-2012, 05:34 AM
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Hey Ben....I agree with your list except the banjo bolts. I have yet to see or hear any solid evidence they are necessary in our fuel systems. The blue spring, though, is a must have.
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Old 03-07-2012, 06:40 AM
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Quote:
Originally Posted by jimmyv13 View Post
Hey Ben....I agree with your list except the banjo bolts. I have yet to see or hear any solid evidence they are necessary in our fuel systems. The blue spring, though, is a must have.
For another $36 I figured what the hell. Nice to see something for this truck that doesn't break the bank. I think I bought them more for that reason than any other... LOL

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