FICM help

[police251]

I have a 05 6.0 L and it runs ruff no matter the temp until the engine is warm. Even when its 78 degress outside it runs like its -50. Someone told me that its the FICM and it needs to be reprogramed to fix this issue.

Does anyone else have this problem and how do I fix it? When it runs bad it drinks diesel very fast. During this time it has no power and when changing gears it does very hard.

[Lilpooh]

Have you pulled and codes using a good scan tool? You can check your FICM by following this link.
http://www.swampsdiesel.com/content/faq/ficm.htm

[police251]

If the volts are low ummm. do i need a new one? Have you heard of the programing helping the no power when its cold.

[dhanna6powerstroke]

If the voltage is low, it's junk. Reprogram won't help.

[caissiel]

Get a Scangauge and find the problem with your truck, it could be many things causing it and it will also cause other problems.

[police251]

ok so thanks to some help from you all I tested the FICM and its at 46-47 volts and did not drop at all. So maybe i have a injector problem. Or the program for the ficm needs to be updated is my guess and other ideas will be awsome thanks for your help

[dhanna6powerstroke]

Originally Posted by police251

ok so thanks to some help from you all I tested the FICM and its at 46-47 volts and did not drop at all. So maybe i have a injector problem. Or the program for the ficm needs to be updated is my guess and other ideas will be awsome thanks for your help

Checked the same when cranking engine also?

[PGreenSVT]

Check it with the engine cold, when cranking and when running. If it is still sluggish when cold and the FICM checks out good throw a couple bottles of Rev-X in the oil. Injector stiction causes similar symptoms.

[a2elvis]

Yep if FICM voltage is good probably have injector issues... Power Balance test or Injector Buzz test should isolate which ones..

[police251]

I checked it cold and running and when just the acc is on and its all 46-47 volts. What does not make and sense is that it only runs like **** when its cold. It runs good after about 10 min or so.