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> N00B O2 questions, O2 locations, quantity, & replacement
post Nov 30, 2018 - 8:14 AM
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MSKapcala

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I have some questions on the O2 sensor locations in my 1997 GT 2.2L. I ordered 2 new oxygen sensors, the "upstream" and "downstream" (thank you Rock Auto). I googled online and looked for videos, but couldn't find any info on this generation (as far as the sensor locations and how to replace).

I found a picture on the forums here. Is the top one the "upstream" and the lower one the "downstream"? Most of what I see online for other cars or generations of celica say the "downstream" is in the exhaust and under the car. This is why I am confused... Parts websites only list 2 O2 sensors for this car and they look like what is in the picture. I am struggling to find out how to post the picture, but it can be found in this link on this forum - http://www.6gc.net/forums/index.php?showto...sor+replacement


Any help would be greatly appreciated. Thanks!!


post Dec 2, 2018 - 9:29 AM
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njccmd2002



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Lol, why change them? Get under your car, follow the exhaust. Youíll find the sensors. You need a mechanics tool available at hardware store to remove the sensor. Some cars have one, some have 2. Depends on year model.


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post Dec 2, 2018 - 9:59 AM
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MSKapcala

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QUOTE (njccmd2002 @ Dec 2, 2018 - 9:29 AM) *
Lol, why change them? Get under your car, follow the exhaust. Youíll find the sensors. You need a mechanics tool available at hardware store to remove the sensor. Some cars have one, some have 2. Depends on year model.



Iím replacing because the car has 255k miles and from what I can tell they have never been replaced. I also donít think Iím getting the mpg I should be. I ordered the special socket/tool. Canít get under the car right now as itís parked next to a curb in the road by my house and I canít drive it to move it since the intake of ant hooked up.
post Dec 3, 2018 - 2:03 PM
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CoolZeen

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is under car, next the pasaenger seat (right hand seat ). you have to move the seat to get to the inside plug.
post Dec 6, 2018 - 8:46 PM
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Smaay

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nothing special needed, I believe its a 13/16 wrench.


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2001 Celica GT-S Turbo
1997 Supra TT 6speed
1997 Celica 3MZ/1MZ swap
1990 Celica All-Trac
post Dec 7, 2018 - 6:21 AM
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MSKapcala

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Thanks

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