348 O2 sensor removal

Good write-up Ernie, and photos as well! I do happen to have a 22mm open end wrench so i may be in luck when it comes to do this!

 

That's cool, especially since I only had a 7/8" O2 sensor socket instead of a 22mm one!

 

Ernie - Really cool of you to post this up! There were some other threads talking about other O2 sensors. Here's what I used... also plug and play with blue heat shielding over wiring. I recall they were about $85 each, so a bit cheaper. Work great so far!

PS - I destroyed one of the old ones trying to get it off of the old cat for reuse on my new Goth Cats. Tried propane torch, and no-go. Penetrant might help, but also may contaminate/ruin the sensor. So I just bought new ones.
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If you are really a Stooge, you do not need to take anything off the car to get to the sensors. Just lay down on your stomach under the back end on each side and you can access the sensors. Also, if you have really snakey hands you can remove and install the 4-pronged plugs without removing the airbox. Having done this repeatedly, you develop a feel for what goes where. It's kind of like working in the dark. Close your eyes and image where everything goes.

 

Nice job Ernie well done and documented with proper photos even a shameless one of yourself

Good work

 

^ You can just barely see the horns and spiked little tail, if you look closely.













(Just kidding, of course!)

 

This thread is good news for the Three Junior Stooges (East Coast) as Junglistluder, Mesoscale, and myself will be installing my GOTH CATS within the next two weeks and can refer to this information to install. Thanks fellas, and long live the brotherhood!

MB

 

Hey, Matt. Let me know when you're going to do it. I'll bring the beer...

- Eric

 

Based on all the problems Ernie's had with his car, I've often wondered if the previous owner may have sported horns and tail. And now the car is starting to possess him!

 

Looking like this SAT at Fort Belvior. Can you make it?
MB

 

Good man, hang onto her!!!

 

I changed both of mine the other day but I decided to go with the Stooge method. I just reached in and loosened them with my wrench and removed them. I also crammed my arm up under the air box and unplugged the connectors without removing anything. It took me about 15 minutes to change both of them.

 

If only 1 of the sensors goes bad, should you still change both regardless? Or is it okay to leave 1 new with 1 old?

 

The two 348 engine ECUs are *entirely* unconnected. They have *no* way of knowing what is going on in the other half of the engine.

So it doesn't matter to the left ECU if you've changed (or not) the O2 sensor on the right side, and vice-versa...meaning that it is OK to change only one or both at your discretion.

 

Excellent, thanks No Doubt!

 

After the shamless self promoting face picture, I can finally visualize the mysterious voice on the phone that has called and helped me out a few times.

It's very funny to me that no one looks like they sound. LOL (not gonna say whether it's good or bad)

great info Ernie. As for those of us who are relatively new to working on fcars, even the simple items spelled out in great detail and with pictures give us the confidence to try the harder stuff. Rock on!