Join Date: Nov 2009
Location: Norwalk, CT
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This sounds like we have a similar issue.
I just replaced all 8 of my injectors due to a few of them deciding to quit. I used OEM rebuilt units from Performance Machine.
I replaced the frame mounted pump at the same time (weak pump killed the injectors).
My FICM never drops below 47.5V.
When it drops below 20* over night, I get a shakey start with 3-4 seconds of "the romps". It clears up very quickly. This just started last week.
Once the engine is very warm (30+ min), I can get it to give a slight shudder/miss. This has been happening for about 6 months. I thought I fixed it once I put in the new injectors and pump. Wrong.
I still suspect my FICM is on the way out. I believe once heat soak sets in, something inside is breaking its contact due to something expanding. My FICM was replaced by the dealer about 2 years ago.
I will follow this thread as well. Please post results once you have it fixed.
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