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This is a known issue that no one (that I;ve heard of) has been able to resolve. I've posted on it and seen others post on it, but I've never come across an answer.
My analysis has led me to conclude it is related to the fuel system, not the various components you mention. To that end I have replaced my pre-pump, fuel relay (brand new, not resoldered), fuel pressure regulator, and cleaned out the lines + injectors. The two elements I have not replaced (but believe are central) are the main pump and fuel filter. I actually believe the latter of these two to be the central player, but I can't for the life of me get mine off; it appears to be slightly rusted on and was overtightened when last replaced. While I'm not a herculoid I'm a pretty strong guy, and all my strength with two vice grips couldn't get the damned thing to budge.
Anyway, it could be an electrical reset or it could be a little air or fuel hiccup causing it to stutter quickly. It happens so fact its hard for me to tell, although I never notice any lighting changes at night to indicate it is electrical. The fact that you replaced all those components and still didn't fix it reinforces my belief that it is a fuel issue.
Hope this helps. Make sure to post any follow-ups to this thread... I'd be interested in hearing anything you come up with.
Good luck,
Rick
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