I had no CEL at all since I started this thing up recently, except when I started it up cold on a couple of mornings and it seemed to be choking on bad gas, firing on only one cylinder, shaking violently and belching smoke. After a few times running like that for about a minute or so it evened out and idled just fine, both mornings. It has not started hard like that since.

The Seafoam in the gas seemed to clear up much of that sort of thing.

Today I ran the motor with the throttle body open to the air (for the CRC Throttle Body spray) and had a lot of the associated vacuum lines off. It threw me the CEL right away while we did this.

The light stayed on though the performance cleared up a lot. But the light persisted.

I took down the codes. I could not clear them off via the black box, however, so I disconnected the negative terminal on the battery for a few minutes.

Then we took a nice nighttime drive in the farmland and through our small town's "strip" so we could catch a bunch of lights to see how the car took off from a stop and to see how she did stopping.

No stalls, no hesitation.

And no codes. None. I checked both 2 and 6 and both blinked 1-1-1 at me.

So if the problems were due to all the stuff I did this afternoon and were cleared up, why did the light stay on? I thought the light turned off if the issued cleared up, but stored the code in memory. I have had problems in the past where the light came on and then went off shortly after, usually right after I did some sort of work.

But that did not happen today. The codes were cleared. The light stayed off. Is this a system where faults in the vacuum system do not show up until a certain number of cold or hot restarts or a certain number of miles have been driven? Will these codes reappear soon if reassembling the air system did not take care of the problems that were detected?
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Mama always told me to eschew obfuscation...