99TranTrany

I am installing some LT's and a off road y-pipe and I didnt get the rear O2 sims. If I just leave the rear O2's unhooked( or just cut them off) I know it will throw a code but will it affect the cars performance?

Thanks, justin

MontereyLS1

iTrader: (4)

It will run rich and make your SES light stay on

Retsik

The only thing that you'll see is an SES light.

The rear O2s have no bearing on performance - they're only used to ensure that the cats are working OK.

BTW - I wouldn't cut the cables. The rear O2 sensors are the same the fronts and may come in handy as a replacement if a front O2 sensor dies down the road.

99TranTrany

Thanks guys, that was what I was hoping to hear. So if I dont cut them off just try and tie them up somewhere?

,justin

Retsik

Yep...

IslandTahoe

How do you turn off the rear O2s w/ edit so that you don't keep getting SES?

Thanks

PS - thats OK I found the answer

Bill Bowling

iTrader: (6)

DTCs for removing AIR, EGR, O2s
Using LS1 Edit, set the codes for:

"Does Error Set SES" to "ON"
"Error Mode" to "Type X = turned off"

Example of LS1Edit screen:

http://www.ls1.com/boggs/o2typex.jpg

For all of these codes:


DTCs for O2:
P0137
P0138
P0140
P0141
P0157
P0158
P0160
P0161

DTCs for EGR
P0400
P0401
P0402
P0404
P0405
P1406
P1409


DTCs for AIR
P0410
P0412
P0418
P1415
P1416

foff667

iTrader: (2)

i wouldnt leave the o2's on the car...i unhooked them and put them in plastic bags to keep them uncontaminated so if i need them later ive at least got good ones

lata
Bill

Bink

FWIW -these will only turn off the diagnostics related to the Rear O2s. We don't have the ability to turn them off, as they are on the export cars, with Edit.
joel