Does anyone know where the o2 sensor is in a 91 CRX? I'm trying to replace it myself. Does any one have any tips or directions to changing it? Thanks

 

it should be visible if you look down between the radiator and the front of the engine, itll be sticking in the side of the down pipe down there. itll have one wire running to it considering its a stock car.

 

It's on the exhaust manifold before the "A" pipe. (As long as it's not a HF model...)

Tips - use a oxygen sensor socket, PB Blaster, and some heat if you have to. This is probably one of the easiest things to do - lefty loosey, righty tighty... but since you are asking where it is I already have an extremely bad feeling about this.

 

agreed it will be in there tight more than likely

 

thanks all. i got it replaced using a o2 socket. very straight forward.