........O2 sensor was actually more stubborn thanks to a heavily rusted 12mm nut that rounded itself in a single twist, but some WD-40 working on it while I made a pizza was enough to make it reconsider after a strong precision love tap with a hammer and screwdriver (nice solid length steel core flat screwdriver to transfer the good vibes)......
Changed out both O2 sensors on my '99 Federal. Thanks to this 4x4Wire - Tech: Time to Replace the O2 Sensor on your 3rd Gen Toyota? how-to it was easy enough. Rear O2 sensor was actually more stubborn thanks to a heavily rusted 12mm nut that rounded itself in a single twist, but some WD-40 working on it while I made a pizza was enough to make it reconsider after a strong precision love tap with a hammer and screwdriver (nice solid length steel core flat screwdriver to transfer the good vibes). Here's a picture of the old and new forward/upstream O2 sensor - might just be the factory original?
Is it weird all I see is the word pizza?
Good job, those nuts are a pain. I replaced mine with stainless steel from Ace. Stupid rust.
agreed.
however I yanked the threaded bodies, (what are those thingys called???), out and just went with stainless bolts of the same pitch and some lock washers
Stinky little studs. I like that idea a lot too.
Changed out both O2 sensors on my '99 Federal. Thanks to this 4x4Wire - Tech: Time to Replace the O2 Sensor on your 3rd Gen Toyota? how-to it was easy enough. Rear O2 sensor was actually more stubborn thanks to a heavily rusted 12mm nut that rounded itself in a single twist, but some WD-40 working on it while I made a pizza was enough to make it reconsider after a strong precision love tap with a hammer and screwdriver (nice solid length steel core flat screwdriver to transfer the good vibes). Here's a picture of the old and new forward/upstream O2 sensor - might just be the factory original?
Nice! I just did the same thing to my 2001 4Runner today as well (minus the rust 'fun').![]()
why the change? were you chasing a code?
pre-emptive maintenance? or also chasing a code?
why the change? were you chasing a code?
pre-emptive maintenance? or also chasing a code?
I'd previously thrown a P0133 code and cleared it after cleaning out the MAF sensor, so there's that. My mpg's have also taken a turn for the worse in the last couple months (like comically bad - 12'ish overall) and this is the only obvious culprit. Sure looks to be the original sensors that I pulled; if so they lasted more than 280,000 miles so I can't complain too much. No new codes so far and it seems to idle more smoothly now. Hoping for a couple mpg gain.
I'm chasing a damn code. That pesky P0171 code is driving me nuts
I'd previously thrown a P0133 code and cleared it after cleaning out the MAF sensor, so there's that. My mpg's have also taken a turn for the worse in the last couple months (like comically bad - 12'ish overall) and this is the only obvious culprit. Sure looks to be the original sensors that I pulled; if so they lasted more than 280,000 miles so I can't complain too much. No new codes so far and it seems to idle more smoothly now. Hoping for a couple mpg gain.