ok, this is a little weird...part of the time when i drive no CEL's the other half or should i say 20% my CEL comes on....throws codes 1 and 14, o2 sensor and iacv, my question is....Why does it only do it 20% of the time and does it mean they are bad or the wires are loose what? I took my iacv off today and cleaned it out, had some carbon in there.....any help would help thanks

 

try cleaning and putting some dielectric grease on the connector of the iacv