My neon has 55000 miles on it. It always runs fine but when it is hot outside the dash board sometimes does not work. The speedometer and tachometer, temp gauge stay at the bottom. The engine, airbag, and another red circle light stay on. The car runs fine but I can't tell how fast i'm going. While i'm driving the dash will shift from working fine to not at all. I think something must be loose but I do not know where to look.