Every time I drive this vehicle Ford Escape, the needle of the temp gauge on the dash always points at 12:00 or always at the middle. Is this accurate? I have read on the internet that the temp gauge is a "dummy" some sort of an idiot light programmed by Ford engineers. Why is it there if this a "dummy" and what purpose that it use? On the contrary, I have a 1984 Isuzu PUP and the temp gauge fluctuates especially on a stop & go traffic on a hot weather climate. My inquiring mind want to know! Thank you all !!!!!!!!!!!