Like the title says, when I first sart the car I usually sit until it idles down and is warmed up. I recently did the Paul Yaw fix for the water leak. Which by the way worked like a charm. Now the temp goes more than half way up untill the idle drops. Matter of fact it idles higher the hotter it gets. Took the t-stat out, made no difference. Runs normal afterwards just does it on the warm up.