My 06 pathfinder 46,000 miles has been overheating. It will also run like shit when it starts getting hot. It only goes up to about 3/4 on the gage then cools back down. But some times it will run like its running out of gas when it starts overheating. I can pull over and turn it off and restart and it runs fine. Even cools down to normal. It only does it every once in a while. But it getting worse with time. Its got a new radiator in it since I had a wreck a few months ago also. Any ideas?