I HAVE AN 06 DURAMAX AND MY PROGRAMMER IS AN EDGE EVOLOTION AND WHEN I FIRST CRANK IT UP IN THE MORNING AND SOMETIMES WHEN ITS JUST SITTING IDLEING IT FLASHES RED WITH THE EXHAUST GAS TEMP BEING OVER THE LIMIT AND I KNOW FOR A FACT IT CANT BE AS HOT AS IT SAYS ALL THE TIME I. THE PYROMETER IS HAS BEEN DRILLED AND TAPPED INTO THE EXHAUST MANIFOLD I HAVE CHECKED IT OUT THE WIRES AND WERE ITS LOCATED AND STILL IT WANT ACT RIGHT SO I JUST UNPLUGGED IT FOR NOW AND IT DIDNT DO IT WHEN I BOUGHT THE TRUCK IT ONLY DID IT AFTER I PROGRAMMED THE EDGE WITH THE NEW PROGRAM IF YOU HAVE ANY SUGGESTIONS I WOULD APPRICIATE IT THANKS

 

Sounds like the probe has gone bad.

 

yup, edge can help you out with that problem though their hot line