Does the '95 J30 have a rear oxygen sensor?

[vishesh]

So here's the backstory: my exhaust pipes (see diagram) are rusty/loose and are leaking exhaust. Environmental hazard, yes, but doesn't really affect the car's operation (except it seems a bit more sluggish, though this could be for other reasons). However, they make the car REALLY LOUD (think lion-roar-loud), and I need to replace them both (left and right sides). I think it's labeled as #2 on the parts diagram under the exhaust parts group. Anyway, I'm shopping around for either (1) new aftermarket exhaust pipes + catalytic converter, OR (2) used, but original Infiniti pipes. Sellers are asking if I need the rear oxygen sensor, and I'm not sure what to tell them. Supposedly the '96 J30's have a rear oxygen sensor port in the exhaust pipes, but I'm not sure if the 95's do. I don't even know whether my car needs/has a rear oxygen sensor. Any thoughts? Diagrams / pictures of J30 underbody would be especially useful. I'm a visual guy.

Thanks!

[coolyun_98]

From http://sparkplugs.com/, it seems like 95 J30 does NOT have rear O2 sensors. You should double check with others...

[gr8scott72]

So here's the backstory: my exhaust pipes (see diagram) are rusty/loose and are leaking exhaust. Environmental hazard, yes, but doesn't really affect the car's operation (except it seems a bit more sluggish, though this could be for other reasons). However, they make the car REALLY LOUD (think lion-roar-loud), and I need to replace them both (left and right sides). I think it's labeled as #2 on the parts diagram under the exhaust parts group. Anyway, I'm shopping around for either (1) new aftermarket exhaust pipes + catalytic converter, OR (2) used, but original Infiniti pipes. Sellers are asking if I need the rear oxygen sensor, and I'm not sure what to tell them. Supposedly the '96 J30's have a rear oxygen sensor port in the exhaust pipes, but I'm not sure if the 95's do. I don't even know whether my car needs/has a rear oxygen sensor. Any thoughts? Diagrams / pictures of J30 underbody would be especially useful. I'm a visual guy.

Thanks!

You do know that you can look under your own car and see for yourself?

[vishesh]

har har scott. problem is, i wouldn't know what i'm looking for.

:p

[yodawill2000]

Looks alot like a Spark plug but it will be in your exhaust system.

[gr8scott72]

Looks alot like a Spark plug but it will be in your exhaust system.

and it will have a wire harness on it.

[vishesh]

and it will have a wire harness on it.

any chance you could point out (maybe on the diagram below) where the oxygen sensor would be? i just need a place to start looking. thanks

[gr8scott72]

any chance you could point out (maybe on the diagram below) where the oxygen sensor would be? i just need a place to start looking. thanks

The rear o2 sensor will be downstream, or behind (towards the rear of the car) the cats.