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Overheating ecoboost when towing

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Overheating ecoboost when towing

  #91  
Old 07-30-2018, 11:57 PM
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Just because your max tow rating is 11600, that doesn't mean you can "legally" tow that much. It is extremely likely that you are exceeding the TRUCK gross vehicle weight rating. When you go to the CAT scale, add up the front and rear truck axle weights, and I'm betting they are over GVWR. There's also a max GAWR for each axle. You also may be over GCWR - total weight of the truck and trailer.

The max tow rating is with a driver but NO cargo or passengers.
 
  #92  
Old 07-31-2018, 09:57 AM
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Now that is a load!
I agree with glc that you very well could be over your axle weight and/or total weight. I would not suggest taking that setup over a 2% grade for any distance....she might get hot!

Nice Tractors by the way!
 
  #93  
Old 07-31-2018, 10:37 AM
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Truck capacity

I'm on the road 4 days on and two off enforcing DOT regs in MA for a living. I'm well versed in GVWR, GAWR and GCWR.

My truck as equipped will tow 11,300lbs. It's at its max and I know the max limit is set by the manufacturer for a reason. It's the max you can expect your vehicle to safely tow. I've blown tires on the trailer and truck before after hitting an unavoidable object. If you know how to manage the wheel, you can control to a stop safely. Even at highway speeds.

I've been on the truck squad now for more than 15 years and we typically refer to manufacturer specs. The reason is, many vehicles under one ton do not list GCWR on their decals leaving us at a disadvantage. I could cite someone and have them towed when in all legitimacy, they are within the capabilities because the GCWR isn't listed on the decal.

Typically from an enforcement standpoint, I'm only getting involved with a non-commercial vehicle if they are speeding, they have trailer sway or it's grossly obvious that they are overloaded, or if there's an accident.

I get teased all the time, asking if I'm filming a Ford Commercial towing my tractors as I have the two on the trailer. I know I'm safe because I know my limits and my vehicle and trailer limits.
 
  #94  
Old 07-31-2018, 10:39 AM
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Towing capacity.

Also, my original post has a typo, my tow capacity is 11,300.
 
  #95  
Old 07-31-2018, 12:38 PM
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Having someone living the enforcement world on this issue on the forum is awesome!
 
  #96  
Old 08-25-2018, 08:07 PM
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Same issue with the new used 2012 F-150 we just purchased

We are having the overheating issue when towing are travel trailer. fully loaded the trailer only weighs 5800 lb. Whenever pulling a grade we register hot and get the red engine overheat warning light. Bought the truck (2012. Heavy payload with the max tow package on it) to pull our trailer so you can imagine my disappointment when it started to overheat. Took it to our local mechanic. He works on a lot of Fords had never heard of the issue. Ran a test and found the 4th cylinder misfiring replaced all the plugs and the coil for that cylinder. Blow out the radiator. Test drove it today still doing exactly the same thing. Has anybody found a fix for this problem
 
  #97  
Old 08-25-2018, 09:23 PM
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Take it to a FORD dealer.
 
  #98  
Old 08-25-2018, 10:12 PM
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I was hoping to get it taken care of without having to do that as we live over an hour away from the dealer. From reading all these threads people haven't had very good luck with the Ford dealers either
 
  #99  
Old 11-05-2018, 04:33 PM
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Originally Posted by JackandJanet View Post
Thanks, brdvpra - your last post tells me the gauge is still just a somewhat worthless, "feelgood", idiot pointer. If the engine is running and has warmed up, it shows midpoint (or an OK reading) but is not showing anything resembling the actual temperature. The rapid rise when the digital readout hit 250 was an ECM controlled function that told you it was going into limp mode. The ECM is supposed to provide a somewhat richer fuel mixture when the engine is under load, which helps cool things. It may not be doing that properly in the earlier model trucks, which is what makes me suggest there may be an ECM flash.

But, you were pulling a VERY heavy load up Raton! I would not be surprised to learn that your engine was getting hot for real. I think your truck is operating nearly at its limits in that situation. Going down, you're hardly producing any heat from combustion and your fans are going to be blowing at full speed. I'd attribute the rapid cooling to having electric fans that are not governed by engine speed and good engineering.

Again, the temperature you are seeing is not actually the coolant temperature. It MAY be an "inferred" coolant temperature, but the sensor is reading Cylinder Head Temperature, which is not effected by low coolant or coolant overheating. But, since you were seeing a smooth, steady rise during the heavy load period, you were experiencing actual engine overheating. It will be interesting to learn what basecamp sees using the OBD monitor when he pulls his similar load under similar conditions.

As I've posted in another thread, when I've pulled my 3500# trailer up long, 7% grades in Arizona at near 100 degree temperatures, my actual CHT did not go up according to my OBD readout. And, my transmission temperature did not change at all. My old 2005 5.4L V8 temperatures always went up significantly during similar contitions. Of course I'm not putting nearly as much stress on things as you and basecamp are, but the little Ecoboost engine is much more suited to hard work.

Still, the rapid recovery everyone has been experiencing may have been fooling me and I may have to eat my words regarding my doubts about overheating. It may indeed be caused by pulling a load at close to weight limits up steep grades. If so, the only solution (if a bigger radiator is no help) would be a SuperDuty class truck. Your posting of the actual temperatures has been very helpful. Thanks again!

- Jack
Hey All,
Has anyone come up with any ideas on how to cure this yet? I was looking at my setup when changing the oil and I think I have some thing that might work. I think we agree the intercooler is sending to hot of air to the engine which is causing the overheating? I saw a chart on one of these posts illustrating the air entering the engine was over 190F when pulling on a grade. What if we installed a Water to Air Intercooler after the factory intercooler. If we used a barrel style or style the keeps the flow in the same direction, there is plenty of room in the tube flowing from the intercooler to the engine. A bracket to the radiator support could be made to support the intercooler's weight. The heat exchanger and pump could be placed on the skid shield on the driver side behind the tranfer case. There is room for it. The top hose could be routed towards the air box on the driver side with a fill port installed. I have to assume getting the intake charge closer to ambient temps would have to help this a lot. Thoughts? Let me know if i'm off base here.
 
  #100  
Old 11-05-2018, 06:59 PM
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Long story short my truck had the overheating issue only one pulling our travel trailer. Have your mechanic look there is a PCM computer download for the fuel mapping under a load period when after doing a shotgun Approach at the repairs my mechanic thought this was the fix that took care of the problem
 


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