Sensor In Catalytic Converter

[OGR88 R32]

just finished converting my ceffy from rb20e to rb20det and its running very very rich, when we wired up the motor the the ceffy loom was different to the rb20det loom so we sorted everything else to get it running and now last problem is the sensor thats in the cat i believe its a a o2 sensor? do the wires from it go to the ecu? if so does anyone have any idea where? or if even it runs somewhere else?

all help would be appreciated

thanks vance

[Munkyb0y]

its not an o2 sensor

its just a cat temp sensor, that goes directly to the dash light afaik (on rb25 R33 anyway)

has no bearing on ecu or anything else. doesnt need to be connected

[NISZILA]

Yea... you don't need it. Just tells you if your cat is overheating... which never happens

[EVIL TWIN]

It's actually to tell if the cat is blocked or collapsed. As mentioned, it's a temperature sensor, and if the cat does collapse or get blocked it will overheat and trigger the dash light, and does nothing if not connected.

[Bumblebee]

actually ur wrong.. its not tell if its blocked or collapsed

When a car runs lean, exhaust temperatures skyrocket. Fuel has a cooling effect and with less fuel and more oxygen.. u burn it all causing it to run very very fkn hot.. the cat light is there so when its runnin lean, u know.. the cat gets too hot and starts to die but id be alot more worried about whats going on inside the engine

I see this pretty often.. They melt pistons. not a pretty sight (im an engine builder)

if the light comes on.. turn ur car off asap. let it cool down to make sure its all ok.. if the light stays on after say 15-30mins... chances are the sensor shit itself. but its not a gamble that i would take. no chance