| finally a break through! The LED did not flash on the ECU but the check engine light did as ajw23ss said it would! In fact it flashed a 55 so nothing major there. I next checked the O2 sensors and the first one checked out fine. It would flash normally. But the 2nd one (right) would not flesh. The check engine light would stay on solid or go off for a bit. Would everyone agree that one of the O2 sensors is bad? Would that cause hard starting and rough idling?
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