I kinda have the same problem. Ever since coming back from a family memeber's house sunday. We had the air on all the way back (hour and a half or so drive back to my house). Now the freaking temp gauge is going all the way to the L then after a little bit goes straight down to the N. And not just gradually. It flies down there. Then sometimes it will go to the R then back down to the N. Also sometimes it goes to the M or the A and then back down to the N. I am wondering if something is partially stuck open not letting enough coolant thru to help cool the engine. Any help is greatly appreciated.
