recently I swaped a CRX (d16a6) intake manifold on a d16y7...
then I had revs and iddle problems
1- when the engine is cold the revs are around 1250, if I press the gas pedal the revs starts to go up and down until the engine warm
2- when the engine is warm the iddle is very low
3 when I was running and stop the car the revs goes down until 1000rpm ups to 1100 and then downs at iddle
4- the ecu throws code 41 (primay oxigen sensor circuit failure)

please excuse my english... I speak spanish!!!

 

k your code is for the O2 sensor. what year is the motor? if it is b4 OBDII came out (round 96ish) you have something called a IACV. Idle air control valve.

i searched for you (yes you can blow me later) on how to clean this biiatch

https://honda-tech.com/zerothread?id=1575913

 

its so funny how people post up their problems and what code they have... just fix the code then come back aight ****