HELP 02 Sensor Replacement

[Ike4President]

Hi Everyone,
Need to replace both up and downstream 02 sensors on my 1996 stock land cruiser.

Anyone have any thoughts, threads or comments I need to be aware of before I begin? Im handy but new to trying to fix my LC.

I've purchased a 22mm offset puller and an 11inch breaker bar. (https://www.amazon.com/gp/product/B00390BS7C/?tag=ihco-20

Anything would be greatly appreciated!

 

[Ismith96fj80]

I pulled both my o2s using a 12mm socket and 3/8 Rachet wasn't too bad beside one nut stripped out previously by another owner and I got that one loose with needle nose Vise grips. It's kinda cumbersome to do as the upstream o2 is close to the passenger side frame rail body, I would suggest soaking it a penetrating fluid and it'll make things easier.

 

[Ismith96fj80]

 

[vfrer]

Get some new nuts from Toyota to put the new sensors back on so you can finish the job... assuming they will be/get destroyed when removing. Mine were

 

[FranceJohnson]

Removing these can be a real PITA. I would start spraying them with PB Blaster several days in advance, and I would take them off hot (when the car and exhaust is warmed up). They will very likely crumble, so like Ismith96FJ80 posted a picture, vice grips will help when/if the bolt becomes deformed. I ended up needing to use a dremmel and grinder to split the nut to remove one of them. Just be patient, it can be a fire fight to remove the nut, but be careful not to booger up the stud and threads underneath, or you will have a new problem when you finally get it off.

 

[shermantank55]

After a two hour struggle, I gave in and went and purchased these:
5-pc BOLT-GRIP™ Base Set - Tools - IRWIN TOOLS

10 minutes later I was done.

 

[Wayne]

https://www.amazon.com/dp/B000C5WCRC/?tag=ihco-20

https://www.amazon.com/dp/B000C5WCRW/?tag=ihco-20

 

[Ike4President]

Get some new nuts from Toyota to put the new sensors back on so you can finish the job... assuming they will be/get destroyed when removing. Mine were

Any idea what size/# nuts I should ask for? Maybe I can get them off amazon or Home Depot. THANKS!!

 

[vfrer]

2 per sensor... toyota p/n is 90179-08059. looks like it is a 8mmx1.25 thread. the nuts are a couple bucks each at the dealer, used on many toyotas.

 

[inkpot]

Or go to VW dealt and get copper/brass nuts that don't seem to corrode as bad ?!

 

[nuclearlemon]

After a two hour struggle, I gave in and went and purchased these:
5-pc BOLT-GRIP™ Base Set - Tools - IRWIN TOOLS

10 minutes later I was done.

I used these too...vice grips didn't do squat...these took them off in no time

 

[suadero]

I had to drill one of them out, probably those extractors would have been easier. But oddly the other three were easy?

oxygen sensor nut

• suadero
• Aug 21, 2016
• 1

oxygen sensor nut

 

[Ike4President]

2 per sensor... toyota p/n is 90179-08059. looks like it is a 8mmx1.25 thread. the nuts are a couple bucks each at the dealer, used on many toyotas.

Vfer any idea if you can get them at Home Depot or are they strictly specialized at dealers?