74charger

okay, I had my check engine light read, and I have a short in my 02 sensor wires somewhere. I have changed the sensor two times now, thanks to my local advanced auto parts, at only the charge of the first sensor. my thought was that there was a problem with the sensor, but now I'm thinking that it is in the wiring some where up top.

My big question is this....is this going to hurt my jeep more than just gas millage untill i can get to it when it warms up? its 0degrees up here and I don't have a garage.

Dallas

kamokid

well, the thing about o2 censors is, they make your engine run rich (obviously) and they also make the engine run rough (or at least some of the time).. If the o2 censor is bad, then when the engine is running rough, theres a chance that a cylinder might not be firing right, and that means that another cylinder is carrying the non working one.. long story short, rods can fly through blocks, all because of a bad o2 censor..

(fix it asap)

kk

74charger

running great, but it is burning just a little rich

kamokid

is the bad one before or after the cat? or do you even have a cat

74charger

have a cat, and it is the one after it

kamokid

ah, man your fine dont worry about it.. it does the same thing if you have the wire fixed, and you dont have a cat.. it tells the ecu how clean the air is after the cat, and then the computer adjusts the air/fuel ratio to correct it.. So no, your fine.. if it starts to run like a Harley Davidson, well that means somethings up..

74charger

man, that is what I thought, i just wanted to make sure, but then I have guys telling me that I am going to throw a rod, and all that stuff. If you don't know, dont scare me!!! I was just worried about having a wiring mess. I know I'm not going to blow my motor (my sunfire was run without a cat for years)

finneys98xj

your cat could be stopped up replace it and see if that do fix your problem. If your cat is gutted then that is your problem.

74charger

no, I had the exhaust apart not to long ago, and when I had the code run, the obd2 monitor was saying that it was getting a fixed reading from the rear 02

finneys98xj

what code was it throwing?

74charger

check engine? I know where the problem is, I just want to make sure I don't have more problems from this

finneys98xj

Was the check engine lite reset when you replaced the o2 senor, meaning did you reset it! I asked for the code so i could look it up just in case you may have missed something. I riped from my cat back off my old xj and ripped the wiring for the o2 sensor. It throught any codes! I dont thank you have a problem there I think it still may be you cat being clogged or not doin it's job by letting your emissions passed throught without filtering properly.

74charger

I had the codes cleared, But I will do a visual exam of the wires, then I will have to work on the cat