6.0 EOT And ECT problems
Thread Starter
|
Cross-Country
Joined: Feb 2018
Posts: 62
Likes: 1
6.0 EOT And ECT problems
so today I was going on about a 30 minute drive. I always seem to monitor my EOT and ECT, and they usually average about 15 degree difference. Well today other things started happening. After about 25 min of the drive I started noticing both of the temps started stretching and soon to be about a 23 degree difference and my wrench light came on which is the electronic throttle control. I monitor the temps with my SCT livewire monitor so of course went to go check the dtc codes. Turns out it threw a P012f code saying “Engine Coolant Temperature / Engine Oil Temperature Correlation”. I eventually got to the place I was going to and turned off the truck and cleared the codes and turned the truck back on and it never came back on again. So I then leave after the truck was sitting for about 2 hours and go back home my trucks EOT was reading 193 and my ECT was 174 being a 19 degree difference. I need help on where to start.
Thread Starter
|
Cross-Country
Joined: Feb 2018
Posts: 62
Likes: 1
Update: I got home and let my truck sit for about an hour until I went to go get diesel. I checked coolant level before I left and it stood at the minimum level of the bottle which I hear is the new maximum level, and after I came back home I checked degas bottle again and my degas bottle was nearly full and looked like it was on the verge of puking!
Thread Starter
|
Cross-Country
Joined: Feb 2018
Posts: 62
Likes: 1
Token Redneck
Joined: Jun 2007
Posts: 9,331
Likes: 341
From: Breckenridge, TX
Update: I got home and let my truck sit for about an hour until I went to go get diesel. I checked coolant level before I left and it stood at the minimum level of the bottle which I hear is the new maximum level, and after I came back home I checked degas bottle again and my degas bottle was nearly full and looked like it was on the verge of puking!
Your ECT temp was low when you looked the second time, don't check until ECT is up to at least 186*f (you'll read 190*f, but 186-188* is normal for an OEM t-stat to run and close enough for this). It sounds like you need an oil cooler, nothing more major than that. The wrench light was programmed in on later PCM strategies, it did it's job and told you to check. You'd notice if the oil cooler ruptured because the expansion tank would be fill of chocolate milkshake oil/coolant mix.
Thread Starter
|
Cross-Country
Joined: Feb 2018
Posts: 62
Likes: 1
Was it at operating temperature? That's an expansion tank, the volumetric expansion of 8 gallons of ethylene glycol (the only coolant on the list I found) can expand almost half a gallon at operating temperature. Cut that with with water we're still talking an inch of change in the degas bottle can be normal. That's why the level was reduced, and the old full mark normal coolant expansion would cause puking absent any problem other than the expansion tank volume wasn't enough.
Your ECT temp was low when you looked the second time, don't check until ECT is up to at least 186*f (you'll read 190*f, but 186-188* is normal for an OEM t-stat to run and close enough for this). It sounds like you need an oil cooler, nothing more major than that. The wrench light was programmed in on later PCM strategies, it did it's job and told you to check. You'd notice if the oil cooler ruptured because the expansion tank would be fill of chocolate milkshake oil/coolant mix.
Your ECT temp was low when you looked the second time, don't check until ECT is up to at least 186*f (you'll read 190*f, but 186-188* is normal for an OEM t-stat to run and close enough for this). It sounds like you need an oil cooler, nothing more major than that. The wrench light was programmed in on later PCM strategies, it did it's job and told you to check. You'd notice if the oil cooler ruptured because the expansion tank would be fill of chocolate milkshake oil/coolant mix.
Trending Topics
Token Redneck
Joined: Jun 2007
Posts: 9,331
Likes: 341
From: Breckenridge, TX
Yes. I bet you see a greater than 15* difference, so you're going to have to make the call of what kind of oil cooler repair to do.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Thread Starter
|
Cross-Country
Joined: Feb 2018
Posts: 62
Likes: 1
Thread
Thread Starter
Forum
Replies
Last Post
JDMick
1948 - 1956 F1, F100 & Larger F-Series Trucks
3
Apr 18, 2005 11:39 AM