Bad O2 sensor symptoms..Searched!...

[redsx13]

Like to post says, i am trying to find the symptoms of a bad o2. You would think that a simple search would come up with all the answers i need right? wrong! only symptoms that came up in the search were...

-running rich-bad fuel economy

As for my car, it is not running rich (AEM says around 14.5 at idle)but the strange thing is when i unplug the o2, it does nothing at all!

would a bad 02 cause a bad idle, and a sleight miss at all rpms?

[schanne]

Why not just replace it? There fairly cheap and needs to probably be replaced anyway.

[redsx13]

Why not just replace it? There fairly cheap and needs to probably be replaced anyway.

I dont know about you but i wouldn't exactly call 90+ dollars cheap.

[Stripes]

I'm thinking mine may be going bad. The other day my car was running fine and then I left the mall and it was missing all crazy at idle and it didn't want to rev right unless I gave it a little more gas than I usually would. It was also running rich, when I was driving and I let off the gas it would just keep "Pop POP POP! Pop poppop pop pop pop" until I gave it gas or put in the clutch. It did the same thing randomly yesterday too.I'm hoping its the o2 sensor because I don't know what else it would be.
Modified by Stripes at 11:02 AM 2/13/2009

[Emperor_Tha]

Mine miss under light acceleration when it's cold. I just disconnect the connector on the o2 sensor and the car has been driving a lot better.

[redsx13]

Mine miss under light acceleration when it's cold. I just disconnect the connector on the o2 sensor and the car has been driving a lot better.

so you just arent running it?

what kind of engine management do you have, if any?

[Emperor_Tha]

Nope not running it. It runs leaner at idle and at steady crusing speed. Better gas mileage.

I'm running stock ecu with a safc. only tune for wot.

[Stripes]

I ordered new o2 sensor today. I'll let you know if it fixes my problem or not when it comes in.

[dtowndrifter]

you an me having the same problems same time...i have a that misfire at light/partial throttle too..

[Stripes]

New o2 sensor installed and it changed nothing. I'm pretty pissed.

[Emperor_Tha]

Double check your wiring. The brown extended wire would be wired onto the black/red and blue/black wire near the battery tray.

Since u r having a miss problem at idle and through out your rpm u should look in to spark and plug gap.

[Stripes]

http://vimeo.com/3426617

Tell me what you think.

[Emperor_Tha]

http://vimeo.com/3426617

Tell me what you think.

Upload it on YouTube so I canview it