If the battery was dead, it probably zeroed out all of your learned tables. It will relearn the idle settings, takes a few minutes. The o2 sensor not being there will default the ecu into the rich/cold start mode. And put gas in it too.
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"You don't have a clue. You couldn't get a clue during the clue mating season in a field full of horny clues if you smeared your body with clue musk and did the clue mating dance."
When she get's bitchy, SPANK THAT ASS!
(#Y#)