Okay so i been gettin bad MPG on my b16a.
So im thinking o2 sensors, so i pop hood unhook both of them.
Start the car and drive around for 5 mins or so, go into vtec and car is all warm up, but no CEL or no codes flashing.
Car seems to run the same as it does with them plugged in.
I also tried to get a reading from the plugs like voltage, but both read 0.
Im confused, got any input?
ALso i heard you can use universal ones from auto zone which engine do i get it for, for the b16a?

 

it won't necessarily throw a code right away. look for a 91 crx si (d16) universal one-wire o2 sensor. they are like 18 bucks right now. same setup as the B16...i am about to get 2 this weekend