Whats up HT,

i have a 93 civic ex coupe, was running a jdm d15b. crackshaft had a chip where it meets the harmonic balancer. swapped it out with a d15b2 block and d16z6 head. my problem is when its warm and under load/ in gear, it begins struggling and gets smoother at higher rpms.

things ive tried: i have a new dizzy and a used one, new cap, rotor and plugs. used wires from my other motor which are still in good condition. spark is all there. got a new fuel filter,rail,fpr,and cleaned the injectors best i can. filled my tank up. so fuel is all there. new main relay, cleaned and swapped 2 iacv's and 2 fitv's. i swapped 2 maps and 2 TB. the map and tps connectors are in the correct place. checked timing maybe like 10 times by now and its good.

i went to fill up gas down the street and CEL came on. checked the codes and come up with code 1- o2 sensor. unplugged it and then the code changed from 1 to 41. now code one is gone and now i got 41. its a new o2 sensor, but i am going to exchange it and get a new one.

i am lost here, searched all over most of the threads with topics/subjects that relate to my problem either get fixed with something i already did or they just stop posting. so no help there.. if anyone can chime in and give me some kind of advice i would appreciate it..

thanks in advanced!!!!

 

If you need more info, just let me know and I will get it.

 

Great!!! 248 views no replies... Exchanged my o2 for a new one and also gonna check out vtec.

 

How did you set the cam timing? Are you using an adjustable gear to make up for the timing change?

 

sounds like u need 2 advance ur cam timing a lil bit

 

ive been reading that you advance the timing 4.5- 5 to achieve stock timing. i did it at 0,4 and 5. same problem. my timing lines back up everytime.

 

thanks for the input tho i appretiate it.

 

Its suppose to be retard not advanced!! Thanks guys...