Hey everyone. I've noticed the last couple of times on the beach with the blazer(1991 350,33" AT's) that after about 20 minutes of driving in the sand that the temp gage runs up to about 240-250 degrees not running a/c. My s-10 will run up a little bit but not that much. So far, the blazer's gage will cool down after back on the road and a few miles highway speed. The gage normally registers about 195 no a/c going and on the highway. Any thoughts/suggestions?