I have a crx with a d16a6 turbo and i cant get rid of the oxygen code i changed them and i keep getting it last time i changed it i didnt come on untill the map sensor came on twice the map sensor and oxygen sensors keep coming on it is on a vafc hack and with 390

 

Exhaust leak? Put your hand on the end of the exhaust pipe and see if it holds pressure.

 

i do have a exhaust leak but i didnt know if that will effect the o2 sensor i can hear it

 

any one

 

can the sensor be on because of the map sensor or of leak exhaust the o2 sensor.

 

If you have removed your cat this might be the problem aswell, the way that you can fix this is by installing a spark plug non fowler in between the pipe and your o2 sensor. i had to do this on my 03 civic, because it's telling your car that the gas is running to rich and the cat is not doing it's job of cleaning it up. there for you install the non fowler and it only lets the sensor get a small amount of gasess.
When i installed mine i had to take a 1/2'' drill bit and drill out the fowler some so the sensor would fit in.

I hope this helps you, it was just a part you can look into and only cost about $2.00 from advance auto parts

 

CRX is OBD0 (unless he converted to OBDII for god knows what reason)

as for the VAFC hack... you mean you are using a piggyback controller? or doing the nasty-*** map hack? if you are using a piggyback, which controller?


as for the o2 code:

are you running an OBDI ECU? if so are you running the 4wire o2 and all of it's wires are hooked to the ECU? does it only happen after the car warms up?


as for the MAP code... I need more info.

what CEL codes pop-up?

 

a VAFC hack is only one way.

 

hey i know u know alot obout this **** i seen u on pgmfi well i have a vafc the old one
and it has the vafc hack that my friend and me did the car is obd0 and it has 390 i am planning on switching to 450 for more power it is a turbo d16a6 i still need to get the missing link to shut off the map sensor so the code doesn't come on i think that why the
02 wount shut off because the map is bad or the ecu is reading it as it is so it doent mix right and my gas milage is bad to.

 

I am thinking the ECU is seeing a map range out of where it wants to be and trying to correct, and o2 doesn't seem to reflect the changes maybe?

tis a guess. I haven't wanted to dive into the VAFC hacks at all; once considered an FMU and FPR, but then found CROME =P

 

yeh i am going to get a missing link in couple of days if that doesn't straighten the problems i will buy the wiring harness obd1 conversion and the dizzy and convert i all ready have a p28 AG-Engineering it is chipped and has the port for usb and it says on it hondata repaired u think crome would work with it. the ecu

 

probably... cause hondata just plugs into the EEPROM socket...


Just check out for J12 to be removed for logging, (J4 on JDM ECU) I normally remove J12/J4 from my ECU and add a 2 pin header to be able to switch the jumper from J1 to J12 and vice versa for when I run with and without the chip.

The OBDI conversion will help.. just make sure you upgrade your o2 as well.