towing heat issues
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Senior User
Joined: Jun 2011
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From: Jersey shore area
towing heat issues
ok heres the deal... took a 410 mile trip last week w/03 6.0 f350 cc sb had my 650 cruiser in bed and pulling 32 foot tt.put truck in tow mode. guess its also important to know i use edge evolution on level 3.have 4'' turbo back exhaust and just did full cooling system flush following instructions from tech site.also just did air oil and fuel filters along with oil change using motorcraft diesel oil. truck is periodicly heating up to over 232 deg. and as high as 238 -240. ect -eot deltas staying pretty close like 2-15 deg.tried towing without tow mode and dont seem to be getting over heat issue btw tranny stays between 150-170 either way.
so big question to you guys who really know your stuff why do you think this heat problem is happening?
second am i taking a big chance of damage to tranny towing w/ tow mode off ?
just looking for good educated opinions from you who have a very impressive knowledge of the beast and thankfully have been so helpfull to all... THANKS IN ADVANCE YOU GUYS ROCK.
so big question to you guys who really know your stuff why do you think this heat problem is happening?
second am i taking a big chance of damage to tranny towing w/ tow mode off ?
just looking for good educated opinions from you who have a very impressive knowledge of the beast and thankfully have been so helpfull to all... THANKS IN ADVANCE YOU GUYS ROCK.
Last edited by chev69ss; Aug 24, 2011 at 12:51 AM. Reason: i suck at typing
Hotshot
Joined: Dec 2003
Posts: 15,368
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From: Stuttgart, Ar
What was the outside air temp.? That can make a big difference in overall temps. I'm not familiar with the evolution programming but that can have a big affect on temps too. You're much better off pulling stock. That's a pretty good load you're pulling too.
Lead Driver
Joined: Sep 2007
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From: Scio, OR
I don't know why there would be a difference in tow/haul mode vs not. I run my Evolution at level 3 all the time and I've never had an overheat problem towing. I'm assuming you've updated your Evolution software so that 3 is Tow mode, not Extreme mode.
Those temps are pretty high. I'd be looking at the thermostat and water pump, as well as if the fan is coming on. And if you are losing or puking any coolant.
Those temps are pretty high. I'd be looking at the thermostat and water pump, as well as if the fan is coming on. And if you are losing or puking any coolant.
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From: Jersey shore area
towing heat issues
we were traveling to new hampshire,lots of up and down mountain roads outside temps were about 75-85.my bike is about 450lbs,and tt is about 9500lbs as i dont travel with any water tanks full.so about 10k overall. i know thats heavy but i dont think its to much for an f350 w/psd. i do wonder if the programmer could be affecting fan operation thought i saw other posts that mentioned issue like that.i will update proggramer as dchamberlain suggested.but with your exp. have you seen intermittant fan op. for any other reason?i ask because each time it got really hot i would ease off and suddenly temps would drop,and thats when i really heard fan running like crazy.THANKS again for your thoughts and insight you are a great help.
Lead Driver
Joined: Feb 2011
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From: L.A. (Lower Alabama)
I run a little warmer in tow/haul also. From what I can tell it's normal due to the later upshifts and earlier downshifts. I routinely tow on the relatively highway without using tow/haul and flip it on in town or if the going gets hilly. On the heat issue, I would clean the outside of the radiator and a/c condenser first. Amazing how much dirt and feathers and stuff can be in there. Next, I'd check to make sure the fan is working right. EGR deletes and broken wires near the fan are common problems. Then the thermostat (again?). After that would be water pump or the housing it bolts to (front engine cover). The housings erode behind the pump and reduce coolant flow.
Trans temp sounds good. Im not sure about that Edge Evo but most guys here use custom tunes and avoid the canned tunes with shift on the fly programmers. The SOF tunes are supposed to be hard on the trans.
Trans temp sounds good. Im not sure about that Edge Evo but most guys here use custom tunes and avoid the canned tunes with shift on the fly programmers. The SOF tunes are supposed to be hard on the trans.
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Senior User
Joined: Jun 2011
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From: Jersey shore area
I don't know why there would be a difference in tow/haul mode vs not. I run my Evolution at level 3 all the time and I've never had an overheat problem towing. I'm assuming you've updated your Evolution software so that 3 is Tow mode, not Extreme mode.
Those temps are pretty high. I'd be looking at the thermostat and water pump, as well as if the fan is coming on. And if you are losing or puking any coolant.
Those temps are pretty high. I'd be looking at the thermostat and water pump, as well as if the fan is coming on. And if you are losing or puking any coolant.
yeah, confusing was that tranny temps never changed but ect def.stayed down lower when not in t.mode. my edge is about 4 mo. old so update hasn't happened yet. it will now! t-stat is new w/full coolant flush just days before trip.did puke a little coolant right after flush but i thought i might have just overfilled a little ,cause it didnt seem to happen again.i also did replace degas cap at that point too just in case.THANKS again for your thoughts and ideas.everyone's time is valuable and using some of yours to help others is true kindness...can't thank all the helpful people on here enough!!
Lead Driver
Joined: Sep 2007
Posts: 8,180
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From: Scio, OR
I've never had a problem with my Evo effecting fan operation. I towed 15.5K up Soldier Pass out of Salt Lake twice and never saw temps above 220.
I would update the Evo. And I wouldn't run it past the Tow tune. I ran the Extreme tune once and I couldn't shift fast enough to keep up with it (manual transmission). I think it's a little too much.
Make sure you put the stock tune back in your truck before you try to update the Evo. Then just download the Fusion software, plug the USB in and let it go to work.
I wonder about not hearing the fan until you back off. At those temps you should hear what sounds like an F-16 under the hood. You might have a fan clutch problem.
I would update the Evo. And I wouldn't run it past the Tow tune. I ran the Extreme tune once and I couldn't shift fast enough to keep up with it (manual transmission). I think it's a little too much.
Make sure you put the stock tune back in your truck before you try to update the Evo. Then just download the Fusion software, plug the USB in and let it go to work.
I wonder about not hearing the fan until you back off. At those temps you should hear what sounds like an F-16 under the hood. You might have a fan clutch problem.
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Senior User
Joined: Jun 2011
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From: Jersey shore area
I run a little warmer in tow/haul also. From what I can tell it's normal due to the later upshifts and earlier downshifts. I routinely tow on the relatively highway without using tow/haul and flip it on in town or if the going gets hilly. On the heat issue, I would clean the outside of the radiator and a/c condenser first. Amazing how much dirt and feathers and stuff can be in there. Next, I'd check to make sure the fan is working right. EGR deletes and broken wires near the fan are common problems. Then the thermostat (again?). After that would be water pump or the housing it bolts to (front engine cover). The housings erode behind the pump and reduce coolant flow.
Trans temp sounds good. Im not sure about that Edge Evo but most guys here use custom tunes and avoid the canned tunes with shift on the fly programmers. The SOF tunes are supposed to be hard on the trans.
Trans temp sounds good. Im not sure about that Edge Evo but most guys here use custom tunes and avoid the canned tunes with shift on the fly programmers. The SOF tunes are supposed to be hard on the trans.
i know egr is not deleted but i have ordered gasket and o rings to pull it and clean it. rad and condenser were cleaned outside while i had the front end apart for other reasons.inside could still be an issue even though i did just flush it i understand alot could still be trapped in there.definetly going to check all fan wiring,and even try towing again without tuner.i appreciate your suggestions and will be following up and trying them.all of these things are good possibilities, but on my own i may never think of some of them...THANK to all!!!
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Thread Starter
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Senior User
Joined: Jun 2011
Posts: 109
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From: Jersey shore area
I've never had a problem with my Evo effecting fan operation. I towed 15.5K up Soldier Pass out of Salt Lake twice and never saw temps above 220.
I would update the Evo. And I wouldn't run it past the Tow tune. I ran the Extreme tune once and I couldn't shift fast enough to keep up with it (manual transmission). I think it's a little too much.
Make sure you put the stock tune back in your truck before you try to update the Evo. Then just download the Fusion software, plug the USB in and let it go to work.
I wonder about not hearing the fan until you back off. At those temps you should hear what sounds like an F-16 under the hood. You might have a fan clutch problem.
I would update the Evo. And I wouldn't run it past the Tow tune. I ran the Extreme tune once and I couldn't shift fast enough to keep up with it (manual transmission). I think it's a little too much.
Make sure you put the stock tune back in your truck before you try to update the Evo. Then just download the Fusion software, plug the USB in and let it go to work.
I wonder about not hearing the fan until you back off. At those temps you should hear what sounds like an F-16 under the hood. You might have a fan clutch problem.
gonna do the evo. update also try towiing tt. while back in stock mode but fan operation is sounding more like my prob. all your suggestions are great and as i said to others i am willing to follow up on all. just dont know how to test fan operation or is that something for the pro wrench techs?
Hotshot
Joined: Apr 2010
Posts: 19,055
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From: Saratoga Springs,UT
gonna do the evo. update also try towiing tt. while back in stock mode but fan operation is sounding more like my prob. all your suggestions are great and as i said to others i am willing to follow up on all. just dont know how to test fan operation or is that something for the pro wrench techs?
can you see fan rpm with the edge ?????
lots of stuff will trigger the fan
my fan will double its speed when A/C on over 95* ambeint to 800rpm
218* ECT and it goes to 1500rpm
theres a few fan steps like that to watch for
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From: Jersey shore area
again more info that i never knew gotta get my edge evo manual out and check on that .if it cant my bro-in-law has scanguage he's willing to let me borrow.so i'll check that out too.thanks again for all your help and great suggestions.
Hotshot
Joined: Apr 2010
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From: Saratoga Springs,UT
some of the diffrent stratigys the trucks have will vary alittle
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Senior User
Joined: Jun 2011
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From: Jersey shore area
checked last night edge evo does 13 parameters fan rpm is not one of them so i will be borrowing the scan guage from my br. in law have an upcoming trip to upstate n.y. for adirondack nationals gonna monitor everything closely and see whats really going on.probobly try running stock first then change to tow program.4and a half hour run gives me time to try different running strategys .will keep all posted. grateful for all input
Lead Driver
Joined: Nov 2007
Posts: 5,139
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i will be borrowing the scan guage from my br. in law have an upcoming trip to upstate n.y. for adirondack nationals gonna monitor everything closely and see whats really going on.probobly try running stock first then change to tow program.4and a half hour run gives me time to try different running strategys .will keep all posted. grateful for all input
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