When you say you're watching the temp gauge...are you talking about the one in the dash (the needle) or are you using your SCT X4 or another data reading device (like Torque Pro) to see an actual number for the coolant temp?

If the later, what are the temps you're seeing?

If you're not running something to see temps being tuned and towing...I'd definitely consider it. It's hard for us to give advice without actual data/hard numbers and how you got them.

 

It's on the stock gauge. Climbs to the point that the reduced power warning kicks in. Don't know that number. You can watch the needle climb when in a hill hard pull. Reduce gas and it will go down

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I think the only way to combat this issue in which I have experienced several times, is to go to an aftermarket CAC & Radiator.
Mine is a 14` and I typically tow a 33' 8k TT in 118° ambient temps (AZ) in June , July, August-mixed in with a lot of 7% grades.
Truck has plenty of power especially on 5*'s p/t tune.....it's keeping cool under extreme conditions.
I've had a few personal set backs, but I have a 170° T to install and a FR Radiator.
I sent my Wagner back, and feel that the FR CAC would be the best for my application.
I've had my truck (several times) and trailer (for them to inspect the; height, weight, width etc..lol) at my Ford dealership. :frown:
I've had the latest ECM/PCM refresh etc...
Truck is a pulling beast.
Their is NO OTHER 1/2 TON that can hang with the boost-period.
A good tune helps, but Ford should have just applied across the board HD hardware with all Max Tow trucks IMO.
Just needs a little tweaking.....

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get yourself a 170° thermostat

 

Return to stock config. Determine if situation repeats. If it does you look at vehicle hardware. If not, you look at SCT tune. It is not uncommon for a person to be running a performance tune with increased boost while towing - instead of a towing or lower performance tune. You can go to a 170 t-stat and bigger radiator then learn that those little turbos stay under pressure for extendedperiods and unable to get the exhaust out - it will still get hot on a performance tune.

 

OP, do you have the max tow package from Ford?

Whats your rear gear ratio?

A 170 T stat will help initially. It might give you an extra min or two of towing before hitting high temp. It will not prevent it.

A larger radiator will definitely help, but IMHO shouldn't be necessary unless your towing heavy, full throttle up a hill.

What's your Mileage?

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well, i have a 2013 3.5 and experience the heat issue as well. coming back from ABQ to LAX i had to stop 4 times to let it cool down. i had an FR CAC and meth injection system working in hopes of not overheating. also 3' Catless downpipes. i was pulling a 6x12 uhaul, and the EGT's would start to climb right along with every hill. (the problem is the super long drawn out ROUTE 66 hills you just wish would stop!) I later found out that i was doing 2 things wrong. I had the 5* sct4 set to 91 perf., and didn't have the "tow/HAUL" switch on the shifter activated. hence the converter was slipping and over gearing. i also had 3.31:1 rear gears with 35" tires. I've since changed to 4.56:1 rear gears, and 37" tires. i use the "tow/haul" button, and seem to have slightly less issues, yet i still have issues. My next steps (considering i am building this into a pre runner) are triple oil / trans coolers in the bed cage, a FR replacement radiator, and larger turbos. i'm hoping that with a 12x14 oil cooler before and after the turbos it will keep the heatsoak down. BUT THESE ENGINES OBVIOUSLY SHARE A COMMONALITY. HEAT SOAK

 

So what did your EGTs rise to when you pulled over? Also what was your ECT?

 

I find Keeping the rpms above 2200 when towing (ie, lockout higher gears or manually shift) will keep boost and load down, which helps to keep temps lower. Depending on your load, speed and terrain, obviously that will only go so far, but it def pays off.

 

FYI, If you have 3.31 gears from the factory i believe you dont have the max tow package. Which includes a larger factory radiator

 

Also, it's not the best idea to run the perf tune while towing.
5* adds that you still need to use the tow/haul mode (button) while using its tow tune.
A 6x12 trailer isn't much weight at all....so I'm not sure why your Temps were getting into the yellow screen.
It's obvious that the stock Ford radiator is a problem area, simply because you have the FR CAC and meth installed.
Put a tow tune on, a 170°T, and use your tow/haul button.
After that a FR Radiator should fix her.


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EcoRaptor13....now that I think about this.
Having that FR CAC blocking the stock radiator my be causing some cooling issues?
I know that Full Race's Freak-o-Boost had their CAC & Radiator upgrade.....well, and many more mods aka bigger turbos etc...
Pointing towards the radiator upgrade.


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Thays why I'd like to see his data logs with ECTs...

 

Are you guys that are overheating still running stock grills or aftermarket? Just wondering if airflow has been restricted and causing issues.

 

Aftermarket grill.

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That looks like a stock grill. Either way it looks like you have plenty of airflow to the radiator. This is mine and I thought it could be having a part in my truck running hot.

 

I guess it is hard to tell...but it's a black bar grill-lol

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Your talking about your cac grille, he's talking about main grille.

 

My bad....

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One thing I'll add is that you probably just need to slow down a bit on the climbs... There is a reason the right lane is full of trucks pulling trailers and campers and it isn't usually a lack of power. Even with full upgrades on my truck I can get the temp rising if I'm trying to tow at the speed limit of higher on a good grade. Another thing is tunes.... they DO add boost and other things (even on a tow tune) and that can stretch the cooling system. Honestly I think the stock tune has more than enough power to tow 90% of the loads out there that the truck is rated for.

 

Sooo, no 70mph runs ehh-lol

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On the lesser grades I run the speed limit or higher with a under 3k load, but 7 degrees? You gotta slow it down.

 

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Well at least I kept the 170° T.....so we'll see how that works out.
Going to run around with the 5* 87p/t for a while.

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All the parts are worth it and all increase capacity.... but you and me live in an extreme climate..... Really stresses the parts.
I'll be towing again at the end of the month, maybe a 8.5k load this time... If that happens I'll try different speed and RPM's for you to look for sweet spots...