Left rear O2 sensor
1 - 19 of 19 Posts
Joined
·
784 Posts
I think that is the rear, passenger side sensor. Unless it's really rusty or seized up, it should be cake. Mine took about about 15 minutes, including gathering the right wrench, etc. A standard wrench should suffice. Be sure and put the right Denso in it.
Judging by your sig, you and I would get along great.
Judging by your sig, you and I would get along great.
Joined
·
6,767 Posts
So the malfunctioning O2 sensor on my truck is passenger side rear?
Joined
·
6,883 Posts
http://www.tundrasolutions.com/forums/1gen-tundra/185007-which-02-sensor-to-get/
I just ordered both sensors for bank 2 via amazon. Cost is $120.68 shipped to my door.
I just ordered both sensors for bank 2 via amazon. Cost is $120.68 shipped to my door.
Joined
·
6,883 Posts
Yes it is. Can't remember the codes for Bank 1 (driver side) but almost positive the 161 is pass rear.
Joined
·
6,767 Posts
This looks like the one that I need... Denso 234-4154 Oxygen Sensor
It is highly suggested that you replace the oval metallic gasket as well as the mounting nuts when replacing the rear oxygen sensors. If they didn't come in the box with the replacement units, get them from the dealer.
Joined
·
6,767 Posts
Roger that. I ordered the mounting nuts and the new sensor comes with a new gasket. Thanks.
QUESTION: Will the Check Engine light turn itself off after I replace the sensor or must I do something else to turn it off?
Joined
·
6,883 Posts
pass rear for the 4WD models is 234-4162.
Here's the breakdown:
234-4154 = 2wd Rears and 4wd rear left
234-4162 = 4wd rear right
234-4169 = Front sensor for both 2wd and 4wd V8
Joined
·
756 Posts
You only need to disconnect negative terminal from battery for like +10 minutes and this will reset the CEL or go to autozone, but easier to disconnect(at the same time as you do sensor) Spray PB Blaster for couple days for easierremoval. Even though i did that and heated up the exhaust before removal , i still stripped threads and had to tap threads on the bung. Pain in the @ss as i did the passenger side front sensor. Take the torch (like the one plumbers use) and heat it up until its red hot, cool ti down and again. They have this "FREEZE OFF" thing in NAPA (should help) - that helps to free up the seized sensor/bolts. Don't rape it and don't pull out BFPP (big f****ing piece of pipe) as you only will twist those nuts off. The you will have to go to the shop or drill and tap to put new stud in. Been there and done that and believe me its no fun. Take your time. Don't try to muscle trough things as them old bolts will fail and then you'll be in trouble like i was (twice
) Look here at my case http://www.tundrasolutions.com/forums/1gen-tundra/185566-disaster-during-o2-sensor-removal-need/http://www.tundrasolutions.com/forums/1gen-tundra/185566-disaster-during-o2-sensor-removal-need/
Joined
·
6,767 Posts
Thank you for the breakdown, I had already ordered the 4154 and went ahead and ordered the 4162 after reading your post.
I will return or sell off the one I don't use.
Thank you and I have read that disaster post...You only need to disconnect negative terminal from battery for like +10 minutes and this will reset the CEL or go to autozone, but easier to disconnect(at the same time as you do sensor) Spray PB Blaster for couple days for easierremoval. Even though i did that and heated up the exhaust before removal , i still stripped threads and had to tap threads on the bung. Pain in the @ss as i did the passenger side front sensor. Take the torch (like the one plumbers use) and heat it up until its red hot, cool ti down and again. They have this "FREEZE OFF" thing in NAPA (should help) - that helps to free up the seized sensor/bolts. Don't rape it and don't pull out BFPP (big f****ing piece of pipe) as you only will twist those nuts off. The you will have to go to the shop or drill and tap to put new stud in. Been there and done that and believe me its no fun. Take your time. Don't try to muscle trough things as them old bolts will fail and then you'll be in trouble like i was (twice
Look here at my case http://www.tundrasolutions.com/forums/1gen-tundra/185566-disaster-during-o2-sensor-removal-need/http://www.tundrasolutions.com/forums/1gen-tundra/185566-disaster-during-o2-sensor-removal-need/
Joined
·
2,709 Posts
When I went to change my rear O2 sensors the nuts were so fragile on one
side they kept rounding off. I was able to get the other side off, but on one
nut I used an 8mm socket to get it off and on the other a 10mm socket.
I was curious to know what the actual size of a new nut was and it turned out
to be a 12mm nut I believe.
Anyway, if you run into rounding off problems a nice little set to have on
hand is the Craftsman Bolt Out. I used it to remove the other side which
kept rounding off and it worked great.
Also, before putting the new nuts on, which seem cheesy to begin with, I
put a little anti-seize on the threads and I also put some over the nuts once
I had them tightened down to sort of put a protective coating over them.
I live in the northeast so we get a lot of snow and ice which means plenty of
road salt, leading to corrosion. Good luck.
John
side they kept rounding off. I was able to get the other side off, but on one
nut I used an 8mm socket to get it off and on the other a 10mm socket.
I was curious to know what the actual size of a new nut was and it turned out
to be a 12mm nut I believe.
Anyway, if you run into rounding off problems a nice little set to have on
hand is the Craftsman Bolt Out. I used it to remove the other side which
kept rounding off and it worked great.
Also, before putting the new nuts on, which seem cheesy to begin with, I
put a little anti-seize on the threads and I also put some over the nuts once
I had them tightened down to sort of put a protective coating over them.
I live in the northeast so we get a lot of snow and ice which means plenty of
road salt, leading to corrosion. Good luck.
John
Joined
·
6,883 Posts
Mine didn't have the gasket as well. Got mine at the dealer for around $7. they said it was a common gasket they carried.# 234-4162 is the correct O2 sensor for the rear right of my 4WD...
they forgot to included a gasket as advertised/pictured in their ad
I have the new nuts and I will have a new Toyota ga$ket this Thursday.
Joined
·
36 Posts
I experienced the same thing using a smaller sized socket to get them out. I ended up taking almost an hour to do mine. But I heat cycled the nuts with map gas about 3 times before I started to try to get them out. Ordering new nuts and a gasket was a good call.
Joined
·
6,767 Posts
The seller AutoLineParts refunded what I paid for sensor #234-4154, all shipping
cost and the cost of the gasket my local Toyota dealer should have today.
Kudos to the folks at AutoLineParts and Amazon.com.
I should have everything bolted into place later this afternoon
cost and the cost of the gasket my local Toyota dealer should have today.
Kudos to the folks at AutoLineParts and Amazon.com.
I should have everything bolted into place later this afternoon
1 - 19 of 19 Posts
