Oxygen Sensor

[cosmicfireball]

....should one replace this part...are there any indications that it should be changed?

Thanks in advance.

[jzz30]

not sure how long they last or at what interval they are recommended to be change at but eventually your car will flash a check engine and if you pull the code your car will tell you when she wants an new one

[cosmicfireball]

Thanks....but would it be to the engines advantage to change it BEFORE the code comes on?

[soarer479]

hmm on an 02 sensor you should be fine just wait for your engine to throw a signal and scan it to make sure thats the problem then simply replace

[jzz30]

well then just change it every 80-100k miles or so

[johnny3]

I'd wait til it sets a trouble code, I've seen the O2 sensors last 200k plus.

[cosmicfireball]

Thanks for your suggestions...I'll wait 'till it 'throws the code'....I guess it is placed under the 'if it ain't broke,don't fix it' category....

[Ray923]

Could someone tell me which one it is....Sensor 2??

[jzz30]

on an IS its probably the second one down the exhaust.

[hvrod]

poor gas mileage

[hvrod]

performance dimishes

[hvrod]

remove 02 sensor and ck it..

[hvrod]

You can clean the outside part with a wire brush..

[hvrod]

Did you know theres 5 02 Sensors for the IS300 ?

[hvrod]

two on the exhaust manifold

[hvrod]

one on the down side of the exhaust mainifold

[hvrod]

One way back ...

[hvrod]

about the passenger side

seat postion..

under the seat..

[hvrod]

you have to go under the carpet

to unhook it..

[hvrod]

I would say at 50,000 to replace.. them

before at 25,000 to clean them..

[cosmicfireball]

Oh...it's a '92 Sc300.....and I've seen where the 'main'O2 sensor sits above the block...there are others,as well for the straight six?