Well the woman told meif they didn't reset the light then it would go off after 100 miles but it's been over 130 now since I replaced the cat and it didn't go out.. So I unplugged the battery cable for 1 hour and have driven it about 20 miles without it coming on.. Will it take 100 miles for it to come back on if there's still a problem? Or should it have come on right away if there was a problem still?
Maybe this isn't a question I should ask here but don't they make dummy O2 sensors? I mean there isnt wires going to the Cat so the onboard computer must base the info that the Cat is malfunctioning on the O2 sensor readings, correct?