High EOT
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Junior User
Joined: Aug 2012
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High EOT
Everyone,
2003 F350 crew cab
199XXX miles
I know this is much discussed topic, but I didn't want to hijack a recent thread and had to start a thread. I've been doing tons of research on what is needed to being my EOT values back to stock specs.
I just recently added a scangaugeII and been monitoring different gauges. I noticed on a road trip this past weekend my EOT was 240ish and ECT was 190ish unloaded. From my research it seems at this point a flush wouldn't really help this issue based on the high miles. I really need this truck to last me another 100+ miles.
Would everyone agree one changing the oil cooler and EGR cooler to help solve my high EOT issues? Can I use the same part numbers as Tr0y in his recent thread "oil cooler and EGR cooler R/R parts list?"
2003 F350 crew cab
199XXX miles
I know this is much discussed topic, but I didn't want to hijack a recent thread and had to start a thread. I've been doing tons of research on what is needed to being my EOT values back to stock specs.
I just recently added a scangaugeII and been monitoring different gauges. I noticed on a road trip this past weekend my EOT was 240ish and ECT was 190ish unloaded. From my research it seems at this point a flush wouldn't really help this issue based on the high miles. I really need this truck to last me another 100+ miles.
Would everyone agree one changing the oil cooler and EGR cooler to help solve my high EOT issues? Can I use the same part numbers as Tr0y in his recent thread "oil cooler and EGR cooler R/R parts list?"
Thread Starter
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Junior User
Joined: Aug 2012
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Yeah I have to keep the EGR. Well.... I can use my sisters address to register my truck she doesn't have emissions where she lives
in north Arizona
So I do the flush first then start tearing it apart to replace everything
in north Arizona
So I do the flush first then start tearing it apart to replace everything
Fleet Owner
Joined: Nov 2003
Posts: 27,872
Likes: 3,592
Your 2003 OEM EGR cooler is pretty reliable - not many fail.
Also:
https://www.ford-trucks.com/forums/9...-pressure.html
Also:
https://www.ford-trucks.com/forums/9...-pressure.html
Posting Guru
Joined: Aug 2010
Posts: 1,924
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From: knox Tn
Like Mark said keep the EGR cooler you won't have any problem with it . And were your temps towing or empty ? Towing you could see temps like that .
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Senior User
Joined: Mar 2010
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Just a thought,have you looked at your temps. after a cold soak ? I would make sure the temp readings were accurate before tearing into it. Might be as simple as a bad EOT sensor ? I know it's doubtful but worth checking before you throw money at it none the less.
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Logistics Pro
Joined: Dec 2004
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From: South Weber, Utah
I've also heard of people blocking off the exhaust inlet and outlet ports on their EGR cooler by having plugs welded in and reinstalling the cooler, that way it will pass a visual inspection and you can leave the EGR valve in place and operational. That would also prevent the EGR cooler from ever sending coolant to the intake and ultimately to the combustion chamber.
Posting Guru
Joined: Jun 2012
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Aside from anything else, you can have just a too high oil temperature... 220 is high, regardless of what the truck is doing, 225 is as high as I would go with regular oil. 240 is risking damage with regular oil and very high with synthetic. I have been told the later flashes start to de-power the engine at temps around 230 - 240.
Brian
Brian
Fleet Owner
Joined: Nov 2003
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The derate is at 253 oil temp. Anything over 235 (or 236) is a problem in my mind. If the oil is that hot then the coolant is over the 221 max (also a point at which the PCM derates the engine) or you have a delta of 15 degrees (or greater) between the coolant and oil and that indicates a plugging oil cooler.
Hotshot
Joined: Jul 2005
Posts: 13,834
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From: Middle Tn.
The derate is at 253 oil temp. Anything over 235 (or 236) is a problem in my mind. If the oil is that hot then the coolant is over the 221 max (also a point at which the PCM derates the engine) or you have a delta of 15 degrees (or greater) between the coolant and oil and that indicates a plugging oil cooler.
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Junior User
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temps
I was unloaded and this was/is just normal freeway driving.
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Junior User
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It was after a cold soak. It wasn't a 12 hour cold soak more like 8-9 hours. This is my daily driver right now and the temp spike after spending some time on the freeway driving home.