O2 Sensor Help

[Adam1985]

I have a 90 camry V6 2.5 and it needs an oxygen sensor, i looked in my Haynes repair manual and it says there are 2 of them, many people have told me that there is no way, and that there is only one. It looks like it shows one in the intake maniford but i cant find it, then it shows one in the exhaust pipe but says "sub-oxygen sensor" and it says on some models. I am sorta lost, if i can find out that there is only one and that it is in the exhaust pipe it would make life alot easier, thanks for any help u can give me.
Adam

[cmrygrl94]

There should be two, the first one on that vehicle is located above exhaust pipe flange, mounted in exhaust manifold........... the second one is located in the lower engine area, below exhaust pipe flange, mounted in exhaust pipe........... good luck..... also make sure u put anti-seize compound on the thread of the new O2 sensors
Elaine

[Adam1985]

How do i know which sensor to replace, when i got a code from the computer it said code 21 which is the oxygen sensor but i donno which one to replace, thanks for your help.
Adam

[cmrygrl94]

Next to the code 21 it should say bank1 or bank2 in parenthses........... bank1 is the sensor in the manifold........... bank2 is the one in the exhaust pipe
Elaine

[Adam1985]

I got the code from computer via the service engine soon light that only blinked a 21, should i just buy the one and replace one and see if the light goes off, thanks.
Adam

[cmrygrl94]

Yeah the only other way is through trial and error.......... just make sure that after u replace the first oxygen sensor disconnect ur battery for about 15-20 minutes .......... that will erase all codes in ur computor so when u run ur car again if ur light comes on again u know its not the one u changed but if it doesn't come on after a significant amount of drivin then u've solved ur problem.......
Elaine

[PLRBEAR]

Originally Posted by cmrygrl94

Next to the code 21 it should say bank1 or bank2 in parenthses........... bank1 is the sensor in the manifold........... bank2 is the one in the exhaust pipe
Elaine

Hmmmm I like ladies who know their sh*t!

[cmrygrl94]

thanx

[Deep]

To reset your ECU you don't have to leave the car for so long, just turn on your headlights after you've disconnected the battery and let it sit for 5 minutes.

Camrygrl, respect for knowing your stuff, you wouldn't happen to have an available sister or something would you? :wink:

[cmrygrl94]

who says i am not available........... just playin.......... i am taken .......... but thanx for the props........ i kinda have to know some stuff with where i work
Elaine