bad thermostat or bad oil cooler? - Ford Powerstroke Diesel Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 7 Old 07-15-2014, 04:23 PM Thread Starter
Serving Our Country!
 
soliphant's Avatar
 
Join Date: Jun 2014
Posts: 41
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
bad thermostat or bad oil cooler?

I have a 04 with a late 04 6.0 and I noticed today while driving in various speeds on various inclines that my deltas particularily the ect is abnormal. While driving I observed various deltas between 4* and 20* differences for example at one point they were 186 & 190 and as far apart as 184 & 204 the eot seemed consistent it was the ect that kept jumping. Could the fact that it was 30*C outside have something to do with it? Im hoping its just the t-stat but I have no idea what a failing oil cooler looks like either


Scott
04 F350 Lariat Crew
CAI, EGR delete, Edge juice w/attitude, ARP's, 4 in Magnaflow turbo back, high idle, blue spring
soliphant is offline  
post #2 of 7 Old 07-15-2014, 04:59 PM
Compression Ignition Addict
 
kinnisoj's Avatar
 
Join Date: Jun 2012
Location: Trinidad Colorado ,USA
Posts: 6,085
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Thanks: 136
Thanked 196 Times in 191 Posts
Feedback Score: 0 reviews
for a good delta test you want to get on a nice flat long road. No towing or racing just crushing at 55-60mph. You ect and eat should settle out fairly quickly and be within 15*.
Running up a hill or acceleration will quickly fowl the test.

BPD OIL COOLER W/COLD WEATHER PACK & BPD oil bypass amsiol filter
BPD WATER PUMP, RADIATOR+ EGR.ARP STUDS
,edge turbo timer
5" TB DIAMOND EYE EXH
ATLAS 40
TITLE IN HAND...
kinnisoj is offline  
post #3 of 7 Old 07-15-2014, 05:03 PM Thread Starter
Serving Our Country!
 
soliphant's Avatar
 
Join Date: Jun 2014
Posts: 41
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I will give it a shot just never seen that big of a spread except for when towing through the mountains on the other hand as well I have never seen the ect fluctuate as rapidly as it was.


Scott
04 F350 Lariat Crew
CAI, EGR delete, Edge juice w/attitude, ARP's, 4 in Magnaflow turbo back, high idle, blue spring
soliphant is offline  
post #4 of 7 Old 07-15-2014, 05:05 PM
Compression Ignition Addict
 
kinnisoj's Avatar
 
Join Date: Jun 2012
Location: Trinidad Colorado ,USA
Posts: 6,085
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Thanks: 136
Thanked 196 Times in 191 Posts
Feedback Score: 0 reviews
A tstat is quick and easy thing to rule out.

BPD OIL COOLER W/COLD WEATHER PACK & BPD oil bypass amsiol filter
BPD WATER PUMP, RADIATOR+ EGR.ARP STUDS
,edge turbo timer
5" TB DIAMOND EYE EXH
ATLAS 40
TITLE IN HAND...
kinnisoj is offline  
post #5 of 7 Old 07-15-2014, 05:07 PM Thread Starter
Serving Our Country!
 
soliphant's Avatar
 
Join Date: Jun 2014
Posts: 41
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Guess I will just have to pull it and take a look


Scott
04 F350 Lariat Crew
CAI, EGR delete, Edge juice w/attitude, ARP's, 4 in Magnaflow turbo back, high idle, blue spring
soliphant is offline  
post #6 of 7 Old 07-17-2014, 08:08 AM
Powerstroke.org Rookie
 
Join Date: Jun 2014
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
EOT/ECT should never be more than 10* apart. I've never seen a failed t-stat in a 6.0 either. You can try replacing it first and seeing if it makes a difference, but I'm thinking your oil cooler is the problem. If you end up replacing your oil cooler, make sure you flush the cooling system throughly and use Ford's VC-9 iron block flush.
1FST_TA is offline  
post #7 of 7 Old 07-18-2014, 09:31 AM
Member
 
Join Date: Jun 2013
Location: CA
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 3 Times in 2 Posts
Feedback Score: 0 reviews
I put new oil cooler lately and driving my dually with heavy camper -delta would stay at 8 degrees, peaking at 11 when I kept the foot on the floor for couple of minutes taking long grades in Sierra.
You can read more details in my topic about coolant spitting.

http://www.powerstroke.org/forum/signaturepics/sigpic220138_1.gif2007 F350 dually/5000 lb, 12' tall camper.
Kajtek1 is offline  
Reply

Quick Reply
Message:
Options

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

Password:


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

Email Address:
OR

Log-in









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