I took the kids to a pool party today, and they love to ride in daddy's truck. I guess riding in moms 11 sequoia gets old. I have a 95 80 and it was high 90's today. First I let the cruiser run for a minute so the a/c could cool the cabin, then drove about 15 miles to fill up with petrol. I never shut off the engine, wanted to keep it cool in the cabin. I then proceeded to drive the next 15 or so miles to our destination. When I arrived I was greeted by the beloved smell of coolant, and a gurgle coming from the overflow resevior which was full. Temp guage( non modded) never mooved, and a/c never quit. You guys think tstat, fan clutch, or something else?