S Cranaw

I got a CEL for my front right heated O2 sensor and drove on it for about a week because I couldn't get it to the shop. Now I am taking it tomorrow so I wanted to shut the light myself before they charge me $70 to clear the codes (something I can do myself). Now I am getting a 0707 for the Cat O2 sensor.

Heres my question...
Is the 0707 (Cat O2 code) just showing up from the bad front O2? I read that the cat O2 monitors only the cat when the front O2's are running properly. Since one of mine is not running properly I think this is why I am getting the second code. Need advice on whether or not you think I should change it (the cat O2).

Thanks.

-Steve

PS-Man MPG is horrendous with bad O2 sensor. I can just watch my gas gauge go down even when not driving hard.

racin89lx

iTrader: (1)

i would just replace the 02 sensor first and see if that helps. i did the same thing, drive around after i got the code and then i started gettting all kinds of different codes. replaced the sensor only and no new codes.

S Cranaw

i think i might still just change the cat O2 sensor. It cant hurt to put a new one on and Im sure a new one will work better than the original one. I need the most gas efficient/top tuned engine right now to help out with MPG since 93 oct. is up to about $2.50 a gallon. Man gas prices hurt right now and im sure they are going to get worse further into summer.

-Steve

nismos14

iTrader: (56)

funny, i have the 0302 and 0707 and i still get 28-32 mpg, once i change my o2 i think my mpg will go up

S Cranaw

Do you seriously have these codes and still have this good of MPG? Should I be worrying about something else?

-Steve

nismos14

iTrader: (56)

yes i do. usually though, with a bad o2 you will get terrible gas mileage so don't be alarmed that something else is wrong

PhillyDonut

iTrader: (3)

any good places/sites to buy O2 sensors? Only place I know of is oxygensensors.com.
Btw, I would need 2 front sensors only and is NOT necessary to change the 3rd (after CAT) correct?

my350z8

Checkout www.courtesypart.com
http://ni-parts.drivewire.com
www.napaonline.com
www.trademotion.com
http://oem.thepartsbin.com

I thought I was going to need 1 but turns out the injector cleaner set off the code.

my350z8

I can not remember exactly where but I did find a couple of sites that tell you how to check O2 sensor operation on the bench (out of the car).

S Cranaw

WOW that MPG with bad 02 sensors is a freaking phenomonon! I want to hear what you get with good 02's.... 75 MPG?!!!!! You sure you dont own a Prius with a Maxima body. Thats awesome that you get such good MPG especially with those symptoms.

-Steve

nismos14

iTrader: (56)

I know so far on this tank looks like i'll be touching 33-34 mpg, and trust me it's no prius, with the power i have after 3k there'd be no mistaking it

jbreit

oxygensensors.com