z6htch

I have a jdm b16 swap in my 94' Civic Cx. I am sometimes throwing a code for fuel supply system and from what I was told it is diagnosed as 99.9 % faulty o2 sensor. I am also getting HORRIBLE gas mileage.

I wasn't sure what o2 sensor to buy, its a 4 wire. So I assume I would get the one for my year and make? I didn't know if there is a diff. between d and b series obd1 o2 sensors? If anyone could help me out, I'd appreciate it.

thumper64

I believe the CX used a 1 wire O2 sensor. You're probably using a P28 or some other ECU that came from a car using a 4 wire? I'd get one for the year and model the ECU came from.

I heard Hondas are picky on O2 sensors, so I was told to stick with Denso or NGK. If you get a universal fit one, they aren't as expensive as ones meant just for one application. You have to cut wires, but it's straight forward.

Just for the heck of it, try making sure the connections are free of corrosion.

94EG8

Yep, Denso (OEM manufacturer for Honda) or NGK is the way to go, Bosch sucks.

Pretty much any '92- '00 Primary O2 sensor will work, exceptions being the '92 - '95 CX & VX, the '96 - '00 HX, and '99 - '00 EXs (IIRC the latter uses a different plug than most other 4 wire O2 sensors.)

HondaPartsHero

troubleshoot it here before you buy one

https://honda-tech.com/forums/hybrid-engine-swaps-18/%5Bfaq%5D-%22my-vtec-doesnt-work%22-1812135/

z6htch

I appreciate it guys. I will most likely pick one up tomorrow and hopefully I get better gas mileage. What should the mpg be for a b16 eg?