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Old 02-26-2005, 11:54 PM
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Default 02 sensors

i have bought a set of pacesetter LT, and am in the process of putting them on. The question i have is what do i do with the rer 02 sensors? i didn't buy sims because i am goine to have the rear ones tuned out. do i just let the rear sensors hang there?
Old 02-27-2005, 12:14 AM
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yeah but your car is going to run like *** till you get them deleted.
Old 02-27-2005, 09:25 AM
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Originally Posted by Blue02Ws6
yeah but your car is going to run like *** till you get them deleted.

why??
Old 02-27-2005, 10:40 AM
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The car will throw all kinds of codes because the PCM still thinks you have rear O2s.
Old 02-27-2005, 11:16 AM
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i took mine completely off and ran like that until i got a tune. my car didnt run rough at all just delete them as soon as u can. i definitely wouldnt let the sensors hang though...i would unplug them and just zip tie the connectors to something...and get them deleted asap. u should be good to go. by the way, when u go to tune the car, this is what u need to delete:

Bank 1, Sensor 2 codes:
P0137
P0138
P0140
P0141
P0420

Bank 2, Sensor 2 codes:
P0157
P0158
P0160
P0161
P0430
Old 02-27-2005, 11:40 AM
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Originally Posted by 00ls1
why??

The PCM is looking for readings from the aft O2's to check the efficiency of the converters (which you will not have, I'm assuming).
Old 02-28-2005, 04:42 PM
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That would explain why I am only running a mid 13 in the 1/4 even with LT headers and an ORY-pipe. I didn't know it could affect it so much. Thanks.
Old 02-28-2005, 04:49 PM
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Originally Posted by 2000BlkCamaroSS
That would explain why I am only running a mid 13 in the 1/4 even with LT headers and an ORY-pipe. I didn't know it could affect it so much. Thanks.
Running w/o the rears deleted will not affect performance...I ran for a week or two like that before having them deleted. You will trip the SES light b/c the car will think the cats aren't working however it's the front O2's that are used by the computer to make your car run right by monitoring the air fuel ratio (hence the reason you can delete the rears w/o affecting performance)
Old 02-28-2005, 06:59 PM
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which o2 sensors will need extensions?....can i just splice the wires and make them longer
Old 02-28-2005, 07:09 PM
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You can purchase O2 extension wires from www.thunderracing.com for 25 bucks apiece. You can get them in 2 days depending on where you live. I ordered two, but currently have one of the rear o2s hanging because I needed three. I zip tied the last one up, and need to get around to ordering the last one.

Car threw a code, but performance isn't effected. your better off getting the extensions instead of splicing, since the underside of the car sees alot of rough conditions.
Old 02-28-2005, 07:10 PM
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Originally Posted by LS1vazquez
You can purchase O2 extension wires from www.thunderracing.com for 25 bucks apiece. You can get them in 2 days depending on where you live. I ordered two, but currently have one of the rear o2s hanging because I needed three. I zip tied the last one up, and need to get around to ordering the last one.

Car threw a code, but performance isn't effected. your better off getting the extensions instead of splicing, since the underside of the car sees alot of rough conditions.
Also, it behooves you to measure the distance before ordering. I got the 48' inch extensions, nowhere needed that much, and know I have alot of access coiled up wires zip tied up.
Old 02-28-2005, 07:33 PM
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Originally Posted by LS1vazquez
Also, it behooves you to measure the distance before ordering. I got the 48' inch extensions, nowhere needed that much, and know I have alot of access coiled up wires zip tied up.
do front,back or all sensors need to have o2 exensions?
Old 03-01-2005, 10:06 AM
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The stock front should reach but you will have to get extensions for the rear since the O2 sensor bung is located 12"-24" back. You would be safe getting a 24" unless you don't want to spend the extra $$. I'd measure bc 12" are a little cheaper, not much, but every little bit counts.




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