WTF issues..............EOT & ECT - Ford Powerstroke Diesel Forum
LinkBack Thread Tools Display Modes
post #1 of 5 Old 03-03-2013, 05:49 PM Thread Starter
Compression Ignition Addict
tsteel's Avatar
Join Date: Jul 2009
Location: Denton County
Posts: 1,874
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Send a message via AIM to tsteel
WTF issues..............EOT & ECT

Ok been awhile since ive been on here so Ill give details of the truck then what issues Im having.

2003 f250 4wd auto with Sinister EGR Delete, Straight 4" turbo back, SCT tuner.

Ok when its below 50*F outside and running heater truck has a hell of a time getting warm and gauge sits on cold mark. If pulling my 24' enclosed with my daughters jr dragster and mule it will get alittle warmer but not much. Also coolant seemed to be puking out of degas bottle so put a new cap on.

Now when about 70*F with A/C on truck will get to normal operating temps on highway.

Pulled codes and only thing I see is #2 injector is in need of replacing.

Pressurized cooling system to 20 psi and it held for 3 hours with no fluctuating.

Used the SCT and monitored the EOT and ECT and they ECT got up to 150*F today with A/C on and EOT was 212*F at same time.

My question is can I be having an issue with the oil cooler? Or is there another issue im not considering?

2009 Harley Crossbones
Has a few goodies but going under the knife soon!

2003 F-250 Quad Cab 4wd Auto 6.0 SCT 4" Turbo Back
tsteel is offline  
Sponsored Links
post #2 of 5 Old 03-03-2013, 07:59 PM
Compression Ignition Addict
Join Date: Jun 2011
Location: Colorado Springs
Posts: 420
Thanks: 1
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Sounds like a stuck open thermostat and a failing oil cooler.

Normal ECT should be 192. If yours won't heat up, it is probably stuck open. Your ECT/EOT delta is not going to get any better when the coolant temperature goes up to normal (won't likely be any worse), but is is way high of a delta.

One thing to do first would be to check the ECT and EOT against the ambient air temperature after the truck has sat all night to be sure the sensors are giving you good info. I am suspicious of the ECT reading and the ECT/EOT delta of 62F. That may be a new record! Could just be a bad sensor....


2005 F-250 6.0L, crew cab, long bed 4x4
completed in 2011: STC update, new IPR, BPD EGR cooler, oil cooler rebuild, 6.4 banjo bolts, blue spring update, SCT X3, Insight CTS, 58V FICM, CCV Mod, DIY coolant filter (now gone), refinished turbo
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

2012: ARP headstuds, OEM gaskets, standpipes and dummy plugs
2015: XDP coolant filter
PSDMikeB is offline  
post #3 of 5 Old 03-04-2013, 02:26 AM
Compression Ignition Addict
Join Date: Dec 2008
Location: port arthur texas
Posts: 4,222
Thanks: 1
Thanked 66 Times in 62 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Yup gotta agree with that.

Lord I shall lead them to the water but I will not try to make them drink
dannyboy950 is offline  
post #4 of 5 Old 03-04-2013, 05:33 AM Rookie
Join Date: May 2010
Location: Sussex county, NJ
Posts: 18
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I have similar readings from a SG2, ect=188-192F but my eot is upwards of 215F and under some heavier loads can go to 225F. I performed a EGR delete on my 2003 6.0L about two years ago but only started to look at the operating numbers since I bought a scangauge.....Wouldn't the EGR delete lower the ECT since you are not sucking heat off the exhaust??.....The EGR delete literature stated it would lower egt which in turn would lower the ect....but I can't see that eot should really change if the heat exchange remains constant in the oil cooler??? This would create the unusually large delta.

Last edited by FarmerDave; 03-04-2013 at 05:36 AM.
FarmerDave is offline  
post #5 of 5 Old 03-04-2013, 05:40 AM
Premium Member
MyTractorsSexy's Avatar
Join Date: Sep 2011
Location: St.Louis Mo
Posts: 1,628
Thanks: 1
Thanked 10 Times in 9 Posts
Mentioned: 0 Post(s)
Quoted: 7 Post(s)
Feedback Score: 2 reviews
oil cooler may be fine. without coolant circulating correctly the oil may not be getting cooled. replace the thermostat and go from there

Mild build 07 F250-SOLD

2011 Black CC SB Lariat F250, 2015 Retrofit, MPD IC Piping, H&S Mini Maxx custom tuned, 5"Flo-pro Exhaust, Sininster Egr Delete, Recon Lighting, No Limit S2 Intake, Tinted, BDS 8" 4-Link Lift w/ Fox Shocks & Dual Steering Stabilizer, 4.10 Yukon's with electric lockers, 37/13.50/22 Toyo MT, 2-Piece Fuel Maverick 22x12 Wheels, PTM Grille Surround, T REX X-Metal Grille, LED heads and fogs, kenwood double din, 4 hertz 210W door speakers 2 JL TW3 10s kenwood amps.
MyTractorsSexy is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome