Did i misunderstand? - Ford Powerstroke Diesel Forum
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post #1 of 14 Old 05-22-2012, 09:00 AM Thread Starter
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Did i misunderstand?

I bought my '04 250 about 4 montgs ago and pretty promptly installed a coolant filter and CTS. I was seeing 8-10* difference between ECT & EOT. As the warm weather moved in the split jumped to 14-15* and sometimes spiked up to 18*. I took that to be a sifn of oil cooler issues. This past weekend I flushed my coolant system, deleted my EGR, replaced my oil cooler, upgraded the FPS, and the turbo feed/ drain lines. I'm now running Zerex EC-1 coolant. Now I'm still getting 10-12* differences. The temperatures themselves are lower. My ECT is going between 190-192* and the EOT is 202-205*. Before my ECT would regularly get up above 200*, so I see improvements I was just under the belief that after these repairs I should be seeing almost identical temperatures. Ant insight is appreciated.



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I really believe these trucks have adaptive behaviors to your driving habits. Your truck reflects you.
If you think your truck might let you down…………..it WILL.
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post #2 of 14 Old 05-22-2012, 09:51 AM
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Did you change the thermostat? You could try that..

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post #3 of 14 Old 05-22-2012, 10:13 AM
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I see nothing wrong with your temperature deltas. There is NO indicator that a delta of 10 to 12 has any meaningful difference than 4 to 6 or any other range under 15 degrees. The only indicator is the one that obviously prompted your coolant flush and oil cooler replacement; greater than 15 degrees. After events such as yours, it is not uncommon to observe these figures more intently too and ascribe additional significance or anxiety to the "perceived" effects. Enjoy your good work.

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post #4 of 14 Old 05-22-2012, 10:14 AM Thread Starter
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Yes, new thermostat as well.



2005 Excursion Lariat 4x4
Mishimoto coolant filter, RCD EGR delete, '03 turbo w/ single plane billet compressor wheel, Edge CTS w/ EGT probe, 5" Rough County suspension, Hellwig 32mm sway bar, 35x12.50 Toyo M/T, 20x12 Fuel Renegade D263 wheels

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Originally Posted by F450Harley View Post
I really believe these trucks have adaptive behaviors to your driving habits. Your truck reflects you.
If you think your truck might let you down…………..it WILL.
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post #5 of 14 Old 05-22-2012, 10:19 AM Thread Starter
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Quote:
Originally Posted by howell_jd View Post
I see nothing wrong with your temperature deltas. There is NO indicator that a delta of 10 to 12 has any meaningful difference than 4 to 6 or any other range under 15 degrees. The only indicator is the one that obviously prompted your coolant flush and oil cooler replacement; greater than 15 degrees. After events such as yours, it is not uncommon to observe these figures more intently too and ascribe additional significance or anxiety to the "perceived" effects. Enjoy your good work.

Jonathan
This cracked me up. I DO tend to freak myself out after working on something, but in this case I'm not worried I did the work wrong, just wasn't sure if I misunderstood or mis diagnosed.



2005 Excursion Lariat 4x4
Mishimoto coolant filter, RCD EGR delete, '03 turbo w/ single plane billet compressor wheel, Edge CTS w/ EGT probe, 5" Rough County suspension, Hellwig 32mm sway bar, 35x12.50 Toyo M/T, 20x12 Fuel Renegade D263 wheels

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Originally Posted by F450Harley View Post
I really believe these trucks have adaptive behaviors to your driving habits. Your truck reflects you.
If you think your truck might let you down…………..it WILL.
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post #6 of 14 Old 05-22-2012, 10:36 AM
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I'm kind of with you in this. I had a huge delta (sometimes up to 40+ degrees), so I changed the thermostat and flushed just with restore + and distilled water. After that, I filled with CAT-1 EC, and my delta was less than 20 (and would only get up above 15 after a couple hours on the highway). So I decided to hold off on the whole job.

Then this weekend, I installed a Sinister EGR cooler and rebuilt the oil cooler, updated the turbo oil feed tube, the STC fitting and the IPR screen, and I definitely notice the difference, but my delta hovers around 8-10 from 60-75 MPH on flat ground.

So, I'm definitely happy with the results, I just thought I would be looking at a closer spread after a 12 hour flush.

EDIT: I failed to mention that I flushed with 48 gallons of distilled water and the restore/restore + combo. I then changed the coolant filter and filled the system with Rotella CAT-1 ELC coolant.
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post #7 of 14 Old 05-22-2012, 10:50 AM
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Thermostat is not needed as his ECT's are normal. I flushed my system with restore and restore+ twice. Once the normal way and once as a reverse flush. I still replace my oil cooler and I currently see my delta's at 8-9 degrees apart. If you got rid of your egr cooler then you should never worry about your oil cooler again unless your EOT gets above 250*. I have seen some that get the same temps after all that work and I have seen a lot that have 8-10* delta after. My conclusion is that all these d@mn truck are different and I think some just run hotter than others.

NOTE: Are you doing the test correctly?

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Last edited by WarChild; 05-22-2012 at 10:53 AM.
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post #8 of 14 Old 05-22-2012, 12:41 PM
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Quote:
Originally Posted by WarChild View Post
Thermostat is not needed as his ECT's are normal. I flushed my system with restore and restore+ twice. Once the normal way and once as a reverse flush. I still replace my oil cooler and I currently see my delta's at 8-9 degrees apart. If you got rid of your egr cooler then you should never worry about your oil cooler again unless your EOT gets above 250*. I have seen some that get the same temps after all that work and I have seen a lot that have 8-10* delta after. My conclusion is that all these d@mn truck are different and I think some just run hotter than others.

NOTE: Are you doing the test correctly?
I agree with you that there is no need for a thermostat since his ECT is right where it should be.

I disagree that if you delete the egr cooler you don't have to worry about the oil cooler unless your EOT reaches 250*. Removing the egr cooler eliminates the possibility of an egr cooler rupture and resulting head gasket failure. If your temp delta exceeds 15* it still indicates your oil cooler is clogged and it should be addressed. It isn't quite as immediate a problem since the egr cooler is removed but it is still no longer functioning correctly, your oil temps are higher than they should be and it should be corrected. And remember there is still the possibility of an oil cooler rupture with cross contamination of the oiling and cooling systems which is also an expensive mess to clean up. My Take it FWIW.
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post #9 of 14 Old 05-22-2012, 12:48 PM
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Originally Posted by PGreenSVT View Post
I agree with you that there is no need for a thermostat since his ECT is right where it should be.

I disagree that if you delete the egr cooler you don't have to worry about the oil cooler unless your EOT reaches 250*. Removing the egr cooler eliminates the possibility of an egr cooler rupture and resulting head gasket failure. If your temp delta exceeds 15* it still indicates your oil cooler is clogged and it should be addressed. It isn't quite as immediate a problem since the egr cooler is removed but it is still no longer functioning correctly, your oil temps are higher than they should be and it should be corrected. And remember there is still the possibility of an oil cooler rupture with cross contamination of the oiling and cooling systems which is also an expensive mess to clean up. My Take it FWIW.
Truer words have never been spoken.

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Studs/BPD58V FICM Atlas40/BPD oil cooler/waterpump/7.3 fan
Edge insight CTS EGT/Turbo timer/FP SCT with ? Tune
Powermax w/KC billet wheel Warren 175/30%
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post #10 of 14 Old 05-22-2012, 03:20 PM
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I'm sure your ect and eot are about the same in the morning? Right?

Sent from my SCH-I500

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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