Hi Guys,
Anyone ever replaced the 1 wire oxygen sensor that came with their JDM 3sgte engine? Who sells the direct replacement. It seems only the 4 wire sensor is available for the 3sgte from toyota and other parts stores. I have read of people converting to the 4 wire type but none on the 3sgte that I can find. The 4 wire is supposed to be more efficient helping the mpg and emission. By the way, wiring the 4 wire type seems pretty straight forward, except where to tap into a +12volts source thats only on when the car is running. Any help will be appreciated.
thanks

is it the screw in or the plate type? you might try http://www.j-garage.com/, they can get you just about any jdm part for a reasonable price or can help you get the jdm part number to give to the local dealer so they can get it.

This post has been edited by Bitter: Sep 29, 2006 - 6:40 PM

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Thanks, this is the plate type with 2 bolts holes in the flange. I will check the above website.

Have you tried a 86 - 89 GTS sensor?

Just so you know, the heated type [3 or 4 wire] starts working earlier than the non heated type. So it really only effects emissions right after start.

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Yeah, that's what I read also, the difference is start up and during idle or till tempt reaches above 620F or so.
The single wire ones for earlier model celicas are the ones without the flange and two bolts holes, doesn't look like it will fit.

i wonder if a corolla sensor would have a wide enough range to work? 93-97 primary sensors on the corolla 1.6 and 1.8 are flanged and single wire. worse comes to worse...have a peice of plate steel cut to the shape for the flange and mount the sensor into that.

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It might be easier to use the 4 wire sensor, use only 2 wires ( the signal and the signal ground) and just disregard the other 2wires for the heater element? I'm thinking about trying it this way.