I have a 2005 6.0 that shuts off whenever it wants to. Just died again. Plugged it into AE and all looked normal, no codes either. Tried swapping the egr with another one, ran for awhile, started acting up again. Sometimes it starts right back up, other times it has to sit a bit. I thought it was an oil pressure issue, but when I monitored it hot and cold, the pressures always stayed up 550-600 at idle. The FICM voltage doesnt come off 48.5 and the IPR hovers around 28-32%. Any help would be appreciated. We have six of these truck and all of them seem to have different things wrong with them. Thanks in advance.