? About Temp Readings
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Posting Guru
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From: Anderson, SC
? About Temp Readings
Ok, so I just recently got some new PIDs added to my Insight CTS this past week, but have some questions as to what I should be seeing. I've been looking at Bismic's spreadsheets and it says that ECTs are normal at 190-195, and severe service is from 195-200. Today my truck went up to 200. However, Bismic's spreadsheets also sasys that his readings are not through the OBDII, which mine are. What does this mean for me? Should I be worried?
My EOT also went up to about 209, which is about in the middle of the normal operating range. However, one post I read said that the ECT and EOT should not vary more than 8-10 degrees between each other, which they were right on the borderline of doing today as you can see. Why is this and how is this a problem?
My EOT also went up to about 209, which is about in the middle of the normal operating range. However, one post I read said that the ECT and EOT should not vary more than 8-10 degrees between each other, which they were right on the borderline of doing today as you can see. Why is this and how is this a problem?
Senior User
Joined: May 2009
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From: Colorado Springs Colorado
My readings are about the same through my insight. I also stay at about 5-10 deg differant on the temps to. I plan on doing a VC-9 coolant flush to see if it improves at all. If it doesn't an oil/egr cooler replacment won't be far behind.
Fleet Owner
Joined: Nov 2003
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Andey -
Are you sure you aren't looking at Tranny Temps for the severe service? The range in my spreadsheet shows 190-195 ECT as normal and 195-210 as severe service. I meant to update this in the spreadsheet even a little higher to 190-200 as normal and 200 - 215 as severe service. As our trucks get some miles on them, some fouling takes place and normal temps go up some.
The post in the Tech Folder is more accurate IMO and I will correct the spreadsheet (I also need to slightly correct the oil temps).
https://www.ford-trucks.com/forums/9...-pressure.html
Sorry for getting you concerned. I think your temps look fine. However, I will say it is always good to get to know what is typical for your truck and investigate any significant changes.
Oh, also, the real concern point for EOT is when it gets to a 15 degree spread. Even then, if it is for a brief period and during a "transition period", the spread can get a little beyond 15 degrees and be OK. The oil temp will not come down as quickly as the coolant temp after working the engine hard and then easing up on it (or when/if the fan comes on).
Hope this helps.
Are you sure you aren't looking at Tranny Temps for the severe service? The range in my spreadsheet shows 190-195 ECT as normal and 195-210 as severe service. I meant to update this in the spreadsheet even a little higher to 190-200 as normal and 200 - 215 as severe service. As our trucks get some miles on them, some fouling takes place and normal temps go up some.
The post in the Tech Folder is more accurate IMO and I will correct the spreadsheet (I also need to slightly correct the oil temps).
https://www.ford-trucks.com/forums/9...-pressure.html
Sorry for getting you concerned. I think your temps look fine. However, I will say it is always good to get to know what is typical for your truck and investigate any significant changes.
Oh, also, the real concern point for EOT is when it gets to a 15 degree spread. Even then, if it is for a brief period and during a "transition period", the spread can get a little beyond 15 degrees and be OK. The oil temp will not come down as quickly as the coolant temp after working the engine hard and then easing up on it (or when/if the fan comes on).
Hope this helps.
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From: Anderson, SC
Andey -
Are you sure you aren't looking at Tranny Temps for the severe service? The range in my spreadsheet shows 190-195 ECT as normal and 195-210 as severe service. I meant to update this in the spreadsheet even a little higher to 190-200 as normal and 200 - 215 as severe service. As our trucks get some miles on them, some fouling takes place and normal temps go up some.
The post in the Tech Folder is more accurate IMO and I will correct the spreadsheet (I also need to slightly correct the oil temps).
https://www.ford-trucks.com/forums/9...-pressure.html
Sorry for getting you concerned. I think your temps look fine. However, I will say it is always good to get to know what is typical for your truck and investigate any significant changes.
Oh, also, the real concern point for EOT is when it gets to a 15 degree spread. Even then, if it is for a brief period and during a "transition period", the spread can get a little beyond 15 degrees and be OK. The oil temp will not come down as quickly as the coolant temp after working the engine hard and then easing up on it (or when/if the fan comes on).
Hope this helps.
Are you sure you aren't looking at Tranny Temps for the severe service? The range in my spreadsheet shows 190-195 ECT as normal and 195-210 as severe service. I meant to update this in the spreadsheet even a little higher to 190-200 as normal and 200 - 215 as severe service. As our trucks get some miles on them, some fouling takes place and normal temps go up some.
The post in the Tech Folder is more accurate IMO and I will correct the spreadsheet (I also need to slightly correct the oil temps).
https://www.ford-trucks.com/forums/9...-pressure.html
Sorry for getting you concerned. I think your temps look fine. However, I will say it is always good to get to know what is typical for your truck and investigate any significant changes.
Oh, also, the real concern point for EOT is when it gets to a 15 degree spread. Even then, if it is for a brief period and during a "transition period", the spread can get a little beyond 15 degrees and be OK. The oil temp will not come down as quickly as the coolant temp after working the engine hard and then easing up on it (or when/if the fan comes on).
Hope this helps.
But also, what is the reason for wanting the ECT and EOT to be fairly close together?
Senior User
Joined: May 2009
Posts: 283
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From: Colorado Springs Colorado
From what I understand when the temp differance gets to be 15+ degrees it means that your oil cooler is clogged up and coolant won't flow thru to the EGR cooler. When this happens the coolant going into the EGR cooler "flashes" causing excess pressure in the cooling system(puking), and thermal stress to the EGR cooler(egr cooler leaks).
Hotshot
Joined: Jul 2005
Posts: 13,834
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From: Middle Tn.
According to the tech at my dealership 195 to 205 is actually normal depending on ambient. I will on occasion hit 204 for a minute or two unloaded and usually run between 195 and 201. Andey's temps look OK to me. You can exceed the 15 degree spread under certain conditions such as long grades and cresting a hill for the down side. Climbing the ect's go 1st and cresting the ect's dive like a rock but the eot's take time to catch up. You have to think about what the motor is doing and apply a little thought process to it. The 15 degree rule is a rule of thumb for stabilized conditions.
