Help changing the rear O2 sensor

[shodown220]

Ok i changed the front O2 sensor, not a big deal. But the rear one is hard! How do I unplug it? I can't seem to reach it and if i do, then i have to have a screwdriver to release it so it comes unhooked. So i can't seem to get my hand to hold it, and a screwdriver to press the latch, down there and unplug it. Help guys!

 

[Mels]

It's a breeze to work on from under the car. Do yourself a favor and buy a pair of ramps if you don't already have 'em.

 

[shodown220]

I had the car on a lift, is there something i'm missing? Do i just have to push down on the latch? I thought i had to have a screwdriver to push it down with.

 

[Mels]

How did you disconnect the front connector? Shouldn't they both be the same?

It's pouring rain here now, or I'd go have a look myself.

 

[shodown220]

I was working with a guy i know, i went to grab a rag, and when i came back he said he used a screwdriver and pushed the latch down and got the front one. So that's what i was trying to do on the back one. I would go try right now, but i dropped the SHO off with my brother and drove the SVT, so i won't have the SHO back till later.

 

[Yamaha V6]

I think he's got an ATX Mel.

It can be a PITA. Snake your hand up from the underside, using only one hand, disconnect the connector (practice 1 hand on the front one if needed).

You need an O2 sensor offset socket to loosen the old O2 from the downpipe.

After it's loose, you can twist the wiring to spin the O2 out.

Reverse (but be more gentle with the wiring going in on the new one).

Removing a few things up top to get a 2nd person's hand in there will help, if it's available - 1 to hold connector, etc.

 

[SHOtimer]

Get the Autozone o2 rental kit and use it. It makes the rear sensor a breeze.

Right Fred.....?

Doug

 

[SeanMc]

When doing my rear o2, I didn't think, I just looked the other way did it.

 

[Yamaha V6]

Get the Autozone o2 rental kit and use it. It makes the rear sensor a breeze.

Right Fred.....?

Doug

Dude, I'm sorry, but no matter the approach I've used, I can't come close to "breeze" on the rear ATX O2. I must be O2-challenged.

 

[SeanMc]

Well Fred, you need Febreze O2 remover. Makes it all a cinch, and smell great!

 

[Axianator]

Dude, I'm sorry, but no matter the approach I've used, I can't come close to "breeze" on the rear ATX O2. I must be O2-challenged.

Having recently (e.g. just this past weekend) swapped Y-pipes on my own '95 ATX using my long "IT/piano fingers", I have to agree with Fred - there's just no easy way to get at the rear O2 sensor on a Gen 2 ATX using your standard O2 socket.

In retrospect, however, I do believe that an adjustable crowfoot wrench would make things a lot easier.