So I was towing recently and when I turn my AC on, just with the trailer and 5 boxes in it, the temp gauge would raise past the point it usually sits at. I needed to move so I loaded the trailer up and drove 12+ hours in 100 degree+ weather with the windows down and the A/C off. If I would have to push the engine to 4k the temp would go up. If I would turn the ac on cruising at 70 MPH the temp would go up. Do I have a bad water pump here? Fan clutch? Both? I was looking at: http://forums.trailvoy.com/showthread.php?t=71429 and it seems strait forward. I also think that my AC system is over/under filled and needs serviced.