OBD connection headache

dusthead

C-C-C-C-COMBO BREAKERRRRR
Aug 10, 2009
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0
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New London, CT
so my wife has a 97 Chevy Venture...had it smog tested like 6 months ago and it failed. they gave us the codes - misfire and O2 sensor/sensor heater. so i replaced the plugs and wires because i know the rear plugs were never changed after a flood.

purrs like a kitten now..but the light came back on! took it to autozone to get it checked and now the OBD connection isn't putting out power. anyone have this happen with their connection? annoying...