my old D15 got messed up so i put a new zc 1.6 no vtec in the car....all of a sudden im throwin CEL 43 and 1. When i went from d15 to zc i kept the same intake manifold/fuel rail/injectors. thats why it doesnt make sense why i am havin this problem.

the car at times does not feel like it is pulling......and today in 2nd gear the motor sounded good...but it was not goin anywhere...kinda like a missfire...it was holdin back......it also smelled funny..........however no cel was on cuz it turns off everytime i turn the car off......

it only comes on when im not stop and go driving....like when im drivin on a freeway or so.....

ive tried changing....Fuel pressure regulator......checked for vaccuum leaks....and i changed the o2 sensor and got rid of code 1....however i still have code 43 and i dono what else it could be...

anyone got any other suggestions?

 

I have the same problem but im running the stock d15 in mine and i know the smell your talking about mine does the exact same

 

so far i have changed fuel filter.... injectors....fuel pressure regulator...and fuel pump......same ****

 

I remember I had the same problem on my sohc. Cel 1 and 43. When I bought a brand new o2 sensor that got rid of the problem. When you switched out the new o2 did you reset the ecu?

 

yeah i had the same problem with that damn code 43 it took me along time to figure it out but it was the o2 sensor that got rid of the code and my car got hella good gas milage after replacing it too... make sure u wired up the o2 sensor right..