ECT EOT
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Post Fiend
Joined: Sep 2005
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From: Ohio
ECT EOT
I had a couple of questions about ECT and EOT differences.
I recently had my EGR/Oil cooler replaced along with VC-9 flush 10,000 miles ago. I was towing my trailer yesterday, which is 20ft dual axle that prob weighed in at 5k. So my question is, my ECT and EOT dont go over a 10 degree difference no matter how hard you work her which is good. But yesterday while i was towing it was prob 50 degrees out so it wasnt warm at all. The temps were climbing It was about 210 ECT and 218 EOT on my insight CTS. Now i know the difference is normal. But how hot can those temps comfortably get? Is that a normal temp to be seen towing 5k @ 50 degree outside temp? At what point temp wise (ECT, EOT) does a 6.0 defuel?
I recently had my EGR/Oil cooler replaced along with VC-9 flush 10,000 miles ago. I was towing my trailer yesterday, which is 20ft dual axle that prob weighed in at 5k. So my question is, my ECT and EOT dont go over a 10 degree difference no matter how hard you work her which is good. But yesterday while i was towing it was prob 50 degrees out so it wasnt warm at all. The temps were climbing It was about 210 ECT and 218 EOT on my insight CTS. Now i know the difference is normal. But how hot can those temps comfortably get? Is that a normal temp to be seen towing 5k @ 50 degree outside temp? At what point temp wise (ECT, EOT) does a 6.0 defuel?
I'm hitting easy street
Joined: Nov 2009
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From: Central Oregon
I'm hitting easy street
Joined: Nov 2009
Posts: 6,395
Likes: 27
From: Central Oregon
By "Severe Service" I believe it means "putting my foot in it to get up the mountain as fast as I can get there pulling the 8,000# TT."
Normal I believe is empty, pulling nothing.
I've seen my EOT get to 230* climbing Sexton Grade on I-5 in southern Oregon in the summer. Wasn't there long, but it did get there.
Normal I believe is empty, pulling nothing.
I've seen my EOT get to 230* climbing Sexton Grade on I-5 in southern Oregon in the summer. Wasn't there long, but it did get there.
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Post Fiend
Joined: Sep 2005
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From: Ohio
Ya i dont think pulling 5k, low profile trailer in 50 degrees would be considered servere usa. Looks like my cooling syst may have an issue.
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Post Fiend
Joined: Sep 2005
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From: Ohio
Ok thanks guys! I still have to figure out why my rigs throwing a P0528 code which is a no cooling fan circuit. I may have a bad fan clutch on my hands. I'll let y'all know if my temps change or if my clutch is bad or not. Either way gotta wait till pay day till a can buy the clutch so it may take a while unforunatley 
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Post Fiend
Joined: Sep 2005
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From: Ohio
Do you happen to know when it defuels ECT wise?
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Joined: Oct 2009
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From: Pa
Is your EGR valve plugged in? If not it has some control over your fan.
I am not sure when defueling happens with ect! Never defueled on me. I know I got stuck in february, with the radiator blocked, it was getting pretty hot (in the 240* range) and it never missed a beat. (I unblocked the radiator and it cooled in a hurry)
I am not sure when defueling happens with ect! Never defueled on me. I know I got stuck in february, with the radiator blocked, it was getting pretty hot (in the 240* range) and it never missed a beat. (I unblocked the radiator and it cooled in a hurry)