I haven't had a chance to test the FICM yet, but my '06 F250 has a weak injector buzz on cold starts and stumbles on start up after this weak buzz. After it's warm, it still has a somewhat weak buzz but starts flawlessly. This has just come on in the last month or so, so I was wondering if this could be a sign that my FICM is dying. Will test when I can pry my dad's meter out of his hands for a little while.

Thanks in advance for any help as I am new to 6.0's and have previously only been part of the 7.3 crowd.

 

sounds like a good diagnosis so far, test it to confirm. If it is found to be weak then ou can send it out for repair which is alot cheaper then a new half shell or you can update the half shell to a Bullet Proof Diesel half shell, they are nicer looking and built to last forever.

 

so far sounds like it could be your ficm, do the test and see what comes of it like bob said, if you do have ot have it replaced let me know and i will send you the number for a guy that did one for me and upgraded it to a 58v for 200 all together including shipping only takes about 4 buisness days to have done as well.

 

Sound good and will do if need be!

 

Well, the FICM is fine. Readings range from 47.6 to 48.7 at all three stages of the test. Now I'm guessing stiction or an injector on it's way out?