Replace front o2 sensor procedure - Very Easy or Easy? - Page 2

TXLX470 · 01-15-08, 04:21 PM

In other words it's better change one and see the diffence than changing both at one time?????

spressomon · 01-15-08, 07:04 PM

Quote:

Originally Posted by TXLX470

In other words it's better change one and see the diffence than changing both at one time?????

There are two different camp thoughts on this one. However I should probably disconnect my batteries to reset the ECU per what I have read just to eliminate any doubt about what might be going on with the fuel efficiency part...

TXLX470 · 01-15-08, 07:42 PM

Pls let us know the outcome after the ECU resetting..

asong26 · 04-15-08, 04:54 PM

Quote:

Originally Posted by Wellcraft19

I did this just (last?) weekend.
Error code P0155.

Remove the plastic "splash shield that cover the transmission (6 bolts, 12 mm). Follow the exhaust pipe up and you will see the O2 sensor clearly. I did post a picture, will try to find the post and link to it here.

You can easily get to it with properly sized crescent wrench, or a fixed wrench. I'll be running down to basement and provide the measurement in a little while.

If you cannot get it lose, start car and run fora short whle in order to heat up the exhaust. Might be easier getting to it then (note, I had not problems with either of the front ones).

When re-installing, add anti-seize, but MAKE SURE you keep the acual sensor clean!

Hi,

Wealth of information here. I am now ready to replace the O2 sensor. Quick question, how do you remove the 6 plastic bolts that hold that plastic splash guard? I tried to yank out the button but it only comes out a little, and it is stuck. I am afraid of breaking these little button plastic screws if I yank too hard. If I pull harder, would it pop out without breaking?

Thank you.

hoser · 05-01-08, 06:44 PM

Yeah, you just yank the plastic plugs. One of them is different obviously cuz it's a nut instead. I just replaced two O2 sensors and there is a little less room to work with on my LX because of the AHC plumbing.

informationjunky · 09-01-08, 10:59 AM

Quote:

Originally Posted by spressomon

There are two different camp thoughts on this one. However I should probably disconnect my batteries to reset the ECU per what I have read just to eliminate any doubt about what might be going on with the fuel efficiency part...

My drivers side went out about 8 months after the passenger...wish I would have knocked it out at the same time.

ginericLC · 09-01-08, 12:01 PM

Quote:

Originally Posted by informationjunky

My drivers side went out about 8 months after the passenger...wish I would have knocked it out at the same time.

That makes me feel better about replacing both. I ended up buying a O2 sensor wrench at the local auto parts store. It is a $10 tool worth having.

informationjunky · 09-01-08, 12:49 PM

Quote:

Originally Posted by ginericLC

That makes me feel better about replacing both. I ended up buying a O2 sensor wrench at the local auto parts store. It is a $10 tool worth having.

Its a tool I'd may a lot more than $10 for....glad there cheap. FYI the drivers side plug was easier to get to by pulling the skid plate loose.

Liam · 09-07-08, 04:41 PM

does anyone have a picture or know where i can find Bank 1 sensor 1 (Code P0135). How hard is this one to change out and where is the best place to buy the sensor??

informationjunky · 09-07-08, 07:24 PM

Quote:

Originally Posted by Liam

does anyone have a picture or know where i can find Bank 1 sensor 1 (Code P0135). How hard is this one to change out and where is the best place to buy the sensor??

Pretty much mirror location of Bank 2 sensor 1 shown in post 6. Pretty easy to change out with o2 socket (looks like crows foot with a flare nut opening)

Think they are a little over $100 at the dealer.

Liam · 09-07-08, 07:36 PM

Quote:

Originally Posted by informationjunky

Pretty much mirror location of Bank 2 sensor 1 shown in post 6. Pretty easy to change out with o2 socket (looks like crows foot with a flare nut opening)

Think they are a little over $100 at the dealer.

$100? is that for the sensor or the tool?

informationjunky · 09-08-08, 04:47 AM

Sensor, tool is about $10

Big Bert · 10-07-08, 12:43 PM

I just completed changing both front o2 sensors and it is pretty straight forward even for a non mechanic. One failed at 138k miles on my 2000 so I replace both front ones for about $190 in parts total. Thanks for the great instructions to all.

Two things I learned:

1.) There is a tab you need to push on the far end of the connecting plug which releases the plug. The tab is next to the bare wires away from the sensor and has little lines running across it. Just push it down and the plug unsnaps easily.

2.) Go to the Autozone or equivalent and use the free loan a tool program. They will lend you a O2 Wrench at no charge

I mail ordered from sparkplugs.com the o2 sensors and it worked well.

you need the socket for the passenger side and the other crows foot adapter for the driver side. Both are in the O2 wrench kit.

Thanks for the advice.....Bert

ToyotaDon · 10-07-08, 04:56 PM

CruiserDan was only about $7 more than the Denso from oxygensensors.com for a '98 LC. Just ordered both fronts from him yesterday.

You don't want to mess with CDan.

http://forum.ih8mud.com/chit-chat-se...le-he-out.html

wareagle · 10-07-08, 07:01 PM

FYI, I picked up a pair of DENSOs from ebay for $120 shipped. They worked fine. Replacement was veryb easy. Maybe a 45 minute job including R&R of skidplate.

01-15-08, 04:21 PM	#31
TXLX470 IH8MUD Regular Join Date: Oct 2006 Location: Houston, TX Posts: 291	In other words it's better change one and see the diffence than changing both at one time????? __________________ 98 LC 100, 100K MILES, MANIK BULL BAR , WARN DUAL BEAM FOG LIGHTS, SLEE STEP SLIDERS, NITTO 285'S,

01-15-08, 07:42 PM	#33
TXLX470 IH8MUD Regular Join Date: Oct 2006 Location: Houston, TX Posts: 291	Pls let us know the outcome after the ECU resetting.. __________________ 98 LC 100, 100K MILES, MANIK BULL BAR , WARN DUAL BEAM FOG LIGHTS, SLEE STEP SLIDERS, NITTO 285'S,

05-01-08, 06:44 PM	#35
hoser IH8MUD No-Lifer Join Date: Dec 2003 Location: Bay Area, CA Posts: 3,802	Yeah, you just yank the plastic plugs. One of them is different obviously cuz it's a nut instead. I just replaced two O2 sensors and there is a little less room to work with on my LX because of the AHC plumbing. __________________ 98 LX470 85 BJ70

09-08-08, 04:47 AM	#42
informationjunky IH8MUD Lifer Join Date: Jan 2003 TLCA# 6149 Posts: 1,969	Sensor, tool is about $10 __________________ Georgia Cruisers Upstate Cruisers http://www.upstatecruisers.net/ TLCA 6149 86 FJ60 - first and RIP 95 FZJ 80 - second RIP 97 LX 450 - Current locked, ARB, 850J's Front and 863's rear, slee drop blocks, 315's, and M12000, Devo sliders, Iron Pig rear bumper, skid on garge floor 98 LX 470 - wifes

10-07-08, 12:43 PM	#43
Big Bert IH8MUD Rookie Join Date: Feb 2005 Posts: 29	O2 Replacement Easy I just completed changing both front o2 sensors and it is pretty straight forward even for a non mechanic. One failed at 138k miles on my 2000 so I replace both front ones for about $190 in parts total. Thanks for the great instructions to all. Two things I learned: 1.) There is a tab you need to push on the far end of the connecting plug which releases the plug. The tab is next to the bare wires away from the sensor and has little lines running across it. Just push it down and the plug unsnaps easily. 2.) Go to the Autozone or equivalent and use the free loan a tool program. They will lend you a O2 Wrench at no charge I mail ordered from sparkplugs.com the o2 sensors and it worked well. you need the socket for the passenger side and the other crows foot adapter for the driver side. Both are in the O2 wrench kit. Thanks for the advice.....Bert

10-07-08, 04:56 PM	#44
ToyotaDon IH8MUD Regular Join Date: Mar 2007 Location: Visalia, CA Posts: 263	CruiserDan was only about $7 more than the Denso from oxygensensors.com for a '98 LC. Just ordered both fronts from him yesterday. You don't want to mess with CDan. http://forum.ih8mud.com/chit-chat-se...le-he-out.html __________________ Donal

10-07-08, 07:01 PM	#45
wareagle IH8MUD Junior Join Date: Jul 2006 Location: Franklin, TN Posts: 78	FYI, I picked up a pair of DENSOs from ebay for $120 shipped. They worked fine. Replacement was veryb easy. Maybe a 45 minute job including R&R of skidplate. __________________ Mark P - Franklin, TN 2000 LandCruiser UZJ100 - stock 1995 Trooper UX108 - lifted, locked, low'd 2001 Lexus GS430 - quicken'd 1996 Miata NA- slightly mod'd http://www.cardomain.com/id/zutrooper

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