2006 6.0 Overheating

[jkusz]

I have a 2006 F350 with 15,600 miles. I was pulling a 19' Pioneer Camper plus gear with a total weight of approx 5600lbs. I was pulling up a long hill of around 10 miles. I made this trip twice last summer and my engine overheated both times, not to the boiling over point though. I was at approx 2300 rpm, 22 psi boost and around 55 mph. No A/C and outside temp around 60 degrees both times. Once I let off the accelerator the temp quickly dropped. This seems like an awfully light load to be overheating. I've had it to the dealer and they can't do anything unless they can duplicate the load. Has anyone had any similar problems?

jkusz

[Evil Eye]

...And I'm assuming this never happens without a load? Meaning, if you drove your truck up the same hill without the trailer, do you also run hot? Doesn't sound right, but first things would still be thermostat and coolant level.

[jkusz]

Without a load the truck runs fine, the coolant level is fine.

[mschn99]

proper tests need to be run (oil temp....coolant temp.....cooling fan operation....t-stat...etc)...but honestly this is one of the few times that my gut tells me headgaskets. Its not as common as people make it out to be...but it does happen...

[odeesmanfl]

Have you checked the air to air for leaks.