Well I have a2004 f250 turbo diesel 6.0. It is having starting issues! It will start with stating fluid and run idle and when temp reaches 185 oil pressure drops! We have replaced both batteries, starter, icp and ipr ! Ficm reads 48 volts on programmer! Batteries reads 13.50! Temp good ! What else can we check or any recommendations would be helpful! Changed oil also and filter!