I have a b16a2 in a 97 del sol.
I am currently throwing code 14 IACV and 41 Primary O2 Sensor, I AM GETTING terrible gas mileage could the o2 be the problem? or is it more than that?

 

Also cat is rattling like a ***** on the corner I heard this could be the bad gas mileage problem as well.
Let me know please

 

the bad O2 sensor is causing your crappy mileage. The IACV will just cause surging and rough idle

 

k tomorrow i am going to get a stock beseries mani and I ll report back after its installed.
Thanks

 

question for you guys, should I get a o2 bung welded into my existing manifold or should I got one with one already in it.
The one i have now has a secondary only before the cat at the end of the manifold where it meets the cat, now I need one with both one in the top of the manifold and one in the end before the cat correct? and if so which mani should I go with i have a b16a2 in the car.

 

Bump