Ford V-10 Techs Needed, Diagnos My Erratic Coolant Temp

And here's another same issue I had today, appears I was not seeing things after all.

06-21-15***MIL ON - DTC P1285 / P1299 - 5.4L 3V / 6.8L 3V - FALSE OVERHEAT

$1000 repair to fix the issue and by the post on the link below its not really overheating just a false reading..



https://www.ford-trucks.com/forums/1136411-tsb-06-21-15-new-thermostat-and-crossover-pipe.html