Removing Catalytic Conv. and 2nd O2 Sensor

[Anonymous]

ps

he referred to it as a 'conditioner'      s;-) ;-) s;-)     :-) :-) :-)

[Anonymous]

have been reading this old thread with interest in regards to the 02 simulators, what wa the outcome with these did they do the job and settle the eCU and put the light out correctly when the main cat was removed/gutted?

An OBD2 car do have one or more pre-cat O2 sensors and one behind cat. Their readings are different if main catalyst do its job. If you don't have one, the waveform signal sent to ECM is the same and you get a CEL code, but the engine revs normally. If you remove also the 3rd O2 sensor, you have another problem to solve because he is heated and the ECM waits to find a resistance of 11-16 ohm at 20 °C between two black wired terminals of o2 sensor. An OBD1 car doesn't have 3rd sensor nor Japanese MRs. Also Power FC doesn't need the presence  of 3rd sensor.

[Anonymous]

thanks for that  :-) :-) :-)

yep realised about the heater, the 'conditioner' can be wired up normally as below to ensure the readings/resistance is correct . Or as per the second diagram to replace the heater as far as I understand it

[Anonymous]

thanks for that  :-) :-) :-)

yep realised about the heater, the 'conditioner' can be wired up normally as below to ensure the readings/resistance is correct . Or as per the second diagram to replace the heater as far as I understand it

[MODERATOR EDIT] Duplicate images removed from post. [/MODERATOR EDIT]

Right  s:wink: :wink: s:wink:

[Tem]

About that conditioner...does it need the O2 sensor in the pipe? Or can it just hang loose or be removed totally?


Power FC wouldn't care about that sensor at all, would it?

[markiii]

since it's a conditioner it should need to in the pipe.

[Anonymous]

yep power fc wouldnt need it at all