How many wires is our 02 sensor?

[Florida240sx]

Is our 02 sensor 93 dohc 240sx. a single wire? 2? 3? 4?

[Chezedik]

It should still be a single wire unless it is california emissions. The other wires are there to operate a built in heater. This is because O2 sensors have to reach a certain temperature before the inner ceramic cone gets hot enough to allow the O2 sensor to function. The Federal Emissions S13s used a single wire unit, I would have to check the FSM but I believe only 94 S13s that were California had heated sensors.

[Florida240sx]

I'm tryign to hook up a wideband...And was jsut goign to fake the signal back to the ecu instead of getting this bung welded on...

[Thee 240sx Owner]

just get the bung welded on... Its Single wire btw

[Zydeco]

I second that its a single wire.

[slipnfall]

I third the second bung... I was intended to do this myself, using the stock bung. However the wideband O2 won't last as long as an OEM narrowband continuously installed, so you don't want to be running in limp mode if the wideband goes whack.

[Florida240sx]

I already wired it in.seem sto be fine...didn't exactly follow what they where saying...Thaey wanted the grounds in different places..but I just took them all to the battery..

[slipnfall]

I'm curious, which wideband did you go with?