Quote Originally Posted by Marlin View Post
Another problem is the fan clutch. My fan still worked when it was running. The easiest way to check is to try and spin the fan with the truck off, it should not wiggle and be difficult to turn. If its easy to do it, or it wiggles, the clutch is bad.
I agree with Marlin, it may be a fan clutch failure or very weak. You need this to pull the air through the radiator. Did you check it yet?? I know this because mine was starting to run higher than normal on the temp guage and when I replaced the fan clutch, fixed it!!

Here was my thread on the fan clutch help I asked for FYI:
http://www.vehicross.info/forums/sho...ght=fan+clutch