My temp gauge keeps going up and down. When I start the car it goes up pretty high within a few minutes, then after I drive it for awhile, it goes down (usually) within a few minutes. This last time it didn't and, my steering got really stiff like the power steering went out. It's a 93MX6 LS, I just got it and don't know a whole lot about the car or the problem, it didn't do it when I got it. Any ideas on what the problem could be? I'd appreciate any help at all. Thanks!