[Zakal]

Hi Guys,

Has anyone with a circa '93 JDM GTO replaced their O2 sensor? ...and if so, where did you get the replacement? and how much etc?

Ive been looking at the ones on 3SX, but there just seems to be too many options given that the US delivered ones have between 2 and 4 O2 sensors, whereas apparently the JDM ones only had 1.

So I'm hoping someone who's done it before can point me in the right direction.

Cheers,

 

[caswell239]

I have a gto, and got 2 new ones a few months back(had 2 gtos) got it from rock auto. I'll look the part # up shortly. It's got the 4 prong flat connector and rubber grommet for the floor. I should have one still in the box

 

[Zakal]

I have a gto, and got 2 new ones a few months back(had 2 gtos) got it from rock auto. I'll look the part # up shortly. It's got the 4 prong flat connector and rubber grommet for the floor. I should have one still in the box

Awesome, that'd be great. Thanks mate.

Was it difficult (in terms of access) to replace?...and there is only 1 right?

 

[caswell239]

"AIRTEX / WELLS Part # 5S3743 More Info {#MD165083, SU5920}

* Non-stock item--shipping delayed up to 2 business days

AU$63.67 "

this one also:
BOSCH Part # 13812 More Info OE Type - Exact Fit
UPSTREAM


theres the one i ordered. yea it was easy to access, but mine was fucked so i had to pull the exhaust with it in it and have it burned out haha. And yea theres only one.

 

[Zakal]

Great. Ordered one of the Bosch's from RockAuto. $45 plus $28 to post. Not bad considered its still FedEx shipping not USPS.

So where exactly is the sensor located?

The only service manual I've got is for the US delivered models with 2 and 4 sensors. Given their positioning on the side of each engine bank, I presume that the GTO sensor must be placed further downstream once the two banks merge...otherwise it'd be only measuring one bank, right?

Thanks again,

 

[GTOJOE]

that sounds about right. There are 2 sensors o nthe exhaust on a GTO. One O2 sensor and one exhaust temp sensor. The exhaust temp is the one closest to the rear of the car.

 

[Zakal]

that sounds about right. There are 2 sensors o nthe exhaust on a GTO. One O2 sensor and one exhaust temp sensor. The exhaust temp is the one closest to the rear of the car.

So would you access it from underneath the car? or still via the engine bay like you would on a 3000GT?

 

[GTOJOE]

I believe from under the car. It should go through a hole in the floor I think. You might need to pull some of the carpet back. I can't remember 100%

 

[Zakal]

Bugger....that sounds like a bigger job than on the US models, well at least the front one on the US models, the rear one would be a bit of a bitch as well.

 

[caswell239]

No you do it all from Down under....(get it? Australia is reference haha) you pull a the grommet off from the bottom and pull the wires a bit and a black clip comes out the hole and pu undo it there.

 

[emtark]

FWIW I had my ECU out and the cable comes right up in front of it. Made it heaps easier to pull through already unplugged once i had unbolted it from underneath the car.

 

[mrgtott]

Not sure about USDM model but my GTO JDM has a hole in the floor underneath where the cd player sits. You can unplug the o2 sensor right there, quite easy actually

 

[Zakal]

Not sure about USDM model but my GTO JDM has a hole in the floor underneath where the cd player sits. You can unplug the o2 sensor right there, quite easy actually

So you get to it through the centre console then rather than from under the car?

Or do you just mean that once you take it off under the car, its easier to access the plug to unplug it from inside the car?

 

[mrgtott]

hahah, yep, you have to take the downpipe off to take the o2 sensor off, but to unclip the wiring connection you have to go behind and underneath the cd player in the centre console.

 

[Zakal]

Okay, I'm having a bit of trouble finding this hole in the floor.

I've got the head unit out and I'm looking at the ECU, but there's no hole in the floor as far as I can see. I've even pulled out the centre console compartment to see if it's near the SRS diagnostics unit, but no go.

How close should it be to the gear shift cables that run under the ECU?

 

[GTOJOE]

look under the car first. Will make it easier to locate.

 

[MichaelMR2]

ok, your crazy taking the head unit out

I take the side panel out on the pass side, then pull back the carpet that goes over the last of the tunnel before you hit firewall, it's under there, not sure I have pictures...will look now.

 

[Zakal]

Okay, I may have a bigger problem than I thought.

First, I think i've found the cable you guys were talking about, but it has been cut:

Second, thats not the cable that I was working on underneath the car.

Is this not the O2 Sensor? Im kind of hoping not seeing as it looks nothing like the one I bought from RockAuto.com

 

[MichaelMR2]

HHAHAHAHAHAHA

the one your working on BEHIND the cat is just an exhaust TEMP sensor, the exhaust temp sensor is connected under the passenger seat (you need to remove the seat to properly get a look at it. )

if the 02 has been cut that's REALLY not good.

other can comment further, I have to run to bunnings.

 

[Zakal]

Okay, corrected my brainfreeze and located the actual O2 sensor, and have replaced the old one with my new one, and have fed the new sensor wire up through the floor into that spot where the cut wire is in the above pic.

Good news is that the cut wire was on the Sensor side, so all it really was, was the plug had been cut off.

The bad news is that I can't locate any loose wire that im supposed to plug the new sensor's plug into.

I presume there is supposed to be a female plug connecting directly into the ECU?