~ZoSo~

Hey guys, ive got a 90 CRX Si with a 1st gen b16 in it. I need to get a new o2 sensor, but i dont know which one to get. Do i just get one for a 90 CRX?
Thanks

ricodemus

depends which one you need. There are 2 if you are running a stock pw0. The main o2 appeared the same as the o2 in my 90 si, but the secondary is jap specific and you gotta find one of them used.

~ZoSo~

i thought there was only one.. but its the one that plugs in right before the cat

HandCommand

The 1st gen B16's use SINGLE WIRE-non-heated Oxygen sensors. If you are using the original manifold, there will be 2 of them. They need to be up close near the exhaust outlet since they are single wire. If you are running an aftermarket header, you will need to get 2 bungs welded into the primaries.

Your B16 will run correctly with the PR3 or PWO with this set-up.

Make sure you have O2 signal wires running to C8 and C16 of your ECU. I've found sometimes you may need to flip the signals around on some vehicles.

SuperCivic

no doubt..i was running a b16 w/ stock manifold and 2 o2 sensors..i had a nasty hesitation at light throttle. when i switched the wires it cleared right up. remember..driver side is primary and battery side is secondary!!!

~ZoSo~

i only have 1 sensor, everything is set up good, its just i need to replace the sensor that is there since it has become faulty.. the thing is lets say i call up honda or an auto parts store, what do i ask for? was there a usdm honda that used the single wire o2 sensor???

~ZoSo~

I called up pep boys and they have a universal 1 wire o2 sensor, so i was thinking of just picking that up and splicing it in.. any probs with that??

boostinb18

that should work fine.......is your ecu chipped to eliminate the second o2?? becuase it should be throwing a check engine for the secondary if its not hooked up!

~ZoSo~

I think it is, beacuse i get VTEC at 5000, and the CEL isnt on all the time but it will come on after driving the car for a while, which i believe is part of the sensor being bad.. im getting the car smogged by my buddy and he says the the o2 sensor is getting lasy and causing something to fluxuate and the emissions jump up, so it wont pass.. i dono, its been a pain in the *** though. =[ Also does anyone have the list of codes for this engine?

J2turbo21

OK i got a DX crx with a jdm gsr engine in it.I just coverted it to obd 0 and im still using the gsr header which doesnt have a o2 bung.Does it also matter what ecu im running?I cant remember but it the obd 0 ecu that has the most chips for it,I think pr3?So which o2 do i get and from what car.


[Modified by J2turbo21, 1:54 AM 3/21/2003]

J2turbo21

Can anyone answer my questions?