So I believe I have an O2 sensor rite before and rite after the cat? I know I've had vehicles that have had them in the cat also. Where are the located on the dakota? I'm about to go look on mine, but before someone gives me crap and says go look I do not have a stock exhaust on mine and am in the process of fixing my exhaust that the PO butchered up. He tried to straight pipe most of it and the CEL is on and I'm trying to get this all straight. thanks

 

just look on the exhaust. if hes butched the exhaust they probably wont be in the stock place. one after each precat then one before the main cat.

 

so i just looked and what I saw was an O2 sensor about 3 feet in front of the cat and a o2 sensor about a foot behind the cat. Does this sound rite?

 

I though the exhaust had been all straight piped after the cat but it looks like it hasnt until the muffler. My second question is if I ran all new pipe how would I know where to put the 02 sensors and would i just drill a hole and thread it or what do I do to make a place for the O2 sensor? thanks