PewterNHRA2001

iTrader: (1)

replaced my cats the other day, couldnt get the driver side rear 02 sensor off the cat so i said screw (it completely rusted in) gotta wait till the weekend so i can get a new sensor, how bad is it in the mean time to be driving my car around with a missing sensor? also what about just getting o2 sims instead?

staringback05

iTrader: (8)

cars gonna run rich, maybe bog a bit but u should be ok for a day or so.....sims are good but they tend to go out sometimes...then the light comes on and off....so just get them tuned out

RrCoX22

iTrader: (6)

your fine.... don't worry about it

rich Z

I drove mine for 2 days with a bad 02 and it foulded the spark plugs and carboned up the other 02 sensor on the same side.

SUCK MY SS

iTrader: (14)

sims suck...get a real 02 sensor

ryanfx

iTrader: (2)

I'd have to disagree to your entire post. I've had sims on my car for a WHILE now. Everytime the check engine light comes on I scan it, and it's the front o2 sensors getting lazy not the rears. People just misinterpret this as the rears failing since they think the fronts are fine.

Also, the car will run 110% the same way if you unplugged the rear o2's rather than leave them in. The only difference is your check engine light will come on. They have nothing to do with engine / fuel management. Their only purpose is to detect bad cats for OBD II plugin inspections.

Weezzer

Rear O2's have no effect on tuning. Your assertion is totally incorrect.

ryanfx

iTrader: (2)

I was trying to be nice about it

PewterNHRA2001

iTrader: (1)

oredered a new o2, well just went and got both pass and driver side, wont get em for a week, so im fine driving around till i get them on or should i take it easy till then?

viewsonic

Woah what?


I had the understanding rear o2's were just for cat efficiency...

nokeman

iTrader: (30)

So if you have no cats than rear O2's are worthless correct?

NHRAMAN

iTrader: (1)

YES..all the rears do is tell the computer if your cats are in proper working order..If they are clogged or anything else is wrong with them, you get the SES Light.The rears DO NOT affect the way the engine operates AT ALL.