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Rich, one trick that you have probably used on occasion is to spray a cold blast of freon, or other gas on suspected components to see if there is a change. I suppose butane is probably not a good choice for around the hot engine, but my point is to confirm that the IDM, the air intake temp sensor, the mass air sensor, etc are not being affected by the heat. Sometimes as you know, electronic devices can get all wacky when too much heat is involved, even though they are replaced. At this point, you cannot really rule out anything, because sometimes the gremlins are and have been hiding in plain sight. AE certainly rules out certain of these issues, are there any items that are not properly vetted by AE which could be suspect? The suggestion about the fuel fittings is a good one, those choke points make no sense! I feel for you-it can get very frustrating.
I use inverted canned air for a freeze spray. It's not hard to conduct all these tests, it's just very hard to get Stinky to fail when I have the time to do something about it. I have some hot weather coming up soon and I can drive with the A/C on my way home - this almost assures the issue will pop up.
I took one look at where those go, and decided I need some more tools. I have drive vibration issues, air-in-fuel issues, a bench full of goodies to install on Stinky... but no residual patience or time.
It may take a week or two to get all my giveacrap rounded up and back in line - this two-year battle is taking its toll on me.
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