Update: cats removed, test pipe in place. Will update.
Don't think it's a bad O2 sensor, as plugs were as carbon-free as I've seen. Will test, though, along with ignition timing.
PCV replaced, brakes observed not to be dragging.
I'm beginning to suspect "curb crawling" is a lot worse for FE than I counted on. Figured on 12 for my scrapping forays; now thinking 7-9 is more likely...;-(
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