High ECT* and EOT* after oil cooler replacement - Ford Powerstroke Diesel Forum
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Old 06-26-2012, 06:22 PM
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High ECT* and EOT* after oil cooler replacement

Hi, I'm new to powerstroke and also a noob to diesels... i have been researching here for the last 6 months iv owned my 04 f350... I had Deltas at 23* so i went ahead and got my egr delete (sinister) and oil cooler replaced... since then my scanguage2 at 65mph on flat over a 20mile drive with ambient temps of 105* my coolant was sitting at 215* and oil at 223*... I believe this to be to high and in this time i never heard my fan kick on... I then added to my scanguage the FSS (Fan Speed Sensor) and all im getting at 65mph with ECT at 211* and EOT at 220* was FSS at 420rpm... my question is this normal?

Nothing has been done to this truck other than oil cooler and EGR Delete...
Thanks Guys for all the help
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Old 06-27-2012, 10:37 PM
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guess no one wants to assist with my issue?

Bump
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Old 06-28-2012, 03:30 AM
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Sorry for the delay this is not a maned forum thee may not have been anyone here at the time of your post. I will try to help.

While your temps are not excessive for that much ambient temps, your fan clutch shows to not be working correctly. From my own observations you should be turning up at least half engine rpm at those temps.

You may need a new fan clutch.
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Old 06-28-2012, 03:59 AM
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so you are implying that with 65mph wind blowing through the radiator that the fan is somehow connected to water and oil temps? not likely. OP you must remember that at the end of the day, you are cooling the radiator/coolant with 110 degree air and you are only cooling the oil with 211 degree coolant. The fan is usually only a factor at a stop or very low speeds.

not saying that the fan clutch is not weak. I am simply stating that at 65mph that the fan is not the issue.the fan clutch is only useful if the air speed created from the fan/engine rpm is greater then the air speed from mph. and the volume of air the radiator see's from high mph is always going to be greater than the volume the fan creates. So MPH must be very low and inefficient in order for the fan to have to work.the air from vehicle speed is consistantly hitting the entire mass of the radiator at consistant speed. the fan covers only partial radiator mass and is determined by rpm/heat ect.

Last edited by UrbanAssaultVan; 06-28-2012 at 04:09 AM.
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Old 06-28-2012, 07:12 AM
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when you changed the oil cooler did you flush the cooling system? your new cooler could be plugged up with the same sediment that killed your first one. I did the full flush procedure recently and couldnt believe how much crap was in the system. if it is plugged up, you might be able to save it with the reverse flush procedure. I found this very useful

Flushing and Cleaning the 6.0
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Old 06-28-2012, 07:25 AM
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Thanks for the replies... I can tell u I'm going to do a reverse flush on system soon... But about fan speed last night I drove temps got etc 206 eot 211 fan speeds still low at 65 but that's now understandable... Tho stoped in front of house for 10 min fan speed was at 182 I could stop fan by hand... Etc and eot both claimed to etc 209 eot 213 befor fan gradually went to 800 and cooled... I am running stock tune with egr plugged in
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Old 06-28-2012, 07:29 AM
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And when the truck is stopped or slow moveing the engine quits generateing heat?

This is why the computer controlled fan clutch was developed, to provide a more reliable and consistant control over engine temps under all operateing conditions.

Ford chose to do this by useing an infinitly variable speed high volume fan force feeding air thru the heat exchangers as needed only when needed to reduce drag on the engine.

I am feeling too poorley today to get into a debate on this so I will let one of the other Ford techs with access to fords current information. Mebe M-chan 68 or dave or one of the others will chime in.

Basicaly the pcm compares more factors than just coolant to oil temps to turn on the fan.
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Old 06-28-2012, 07:45 AM
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was the fan working properly before you delted the egr? Install the egr valve, and hook up the egr connector, and i bet the fan will work properly again.

Quote:
Originally Posted by element8906 View Post
Hi, I'm new to powerstroke and also a noob to diesels... i have been researching here for the last 6 months iv owned my 04 f350... I had Deltas at 23* so i went ahead and got my egr delete (sinister) and oil cooler replaced... since then my scanguage2 at 65mph on flat over a 20mile drive with ambient temps of 105* my coolant was sitting at 215* and oil at 223*... I believe this to be to high and in this time i never heard my fan kick on... I then added to my scanguage the FSS (Fan Speed Sensor) and all im getting at 65mph with ECT at 211* and EOT at 220* was FSS at 420rpm... my question is this normal?

Nothing has been done to this truck other than oil cooler and EGR Delete...
Thanks Guys for all the help
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Old 06-28-2012, 07:56 AM
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I don't recall ever hearing fan before yet delete... But yet valve is plugged up and just sitting there... But yes I know there is more variables that control the fan but these temps seem just wrong to me...
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Old 06-28-2012, 08:04 AM
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Dannyboy engine continues to heat up till fan will finally get to 800rpm and cool engine... I really think I have a bad fan
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