I have an autometer pyro in my truck that does some crazy things. Sometimes it will read really high untill I tap on it then it bounces all over the place, whack it one more time and it is fine. Usually happens first thing in the morning but not every morning, and will work fine for the rest of the day.
2001 F-350 XLT Super Cab 6 Speed. DP tunes (40t, 80e, 120r, hi idle), Overboost Reg, Tymar,4" AFE exhaust, Autometer Guages, Pro Comp leveling kit, 315/75-16 Toyo mt, American Racing wheels, other stuff coming!