2007 Ford 250 6.0 Diesel

transamz9 wrote:

Rangerman40 wrote:
Just a little info on the FICM. The job of the FICM is to take the 12v from the battery and quadruple it to 48v to fire the injectors. International used to mount the FICM in a different location but Ford chose to mount it nearly on the drivers side valve cover where it is subjected to tons of heat/cool cycles and vibration. Consequently the soldering on the boards in the FICM begins to crack and your 48v starts to slowly drop. Undiagnosed at startup when the FICM is only putting out <45v you start destroying your injectors. If you own a 6.0 the one thing you do need is an Edge Insight so you can watch your FICM voltage constantly...... Care to take a guess why I know all of this info?


Full synthetic oil changes every 5k, fuel filters every 10k, and keep and eye on the difference in temp between oil and coolant. Once it creeps up to 15 degrees or so it's time for a new oil cooler.

You batteries can also strain the FICM. After start up the electrical system is programmed to run off the batteries for a programmed time depending on temp. It can take up to two minutes in cold weather. Your batteries can have enough juice to start the truck fine but not hold enough to keep the voltage up while running until the Alt kicks in. If your battery voltage drops below 11.8 after start up then the batteries need to be replaced.