Rear O2 Sensor's
Thread Starter
Melting Slicks
Joined: Jun 2005
Posts: 3,088
Likes: 61
From: NY- 2013 Corvette Challenge Champion-2013 Index Combo Champion 2015 CC/MM Champion
St. Jude Donor '07
Originally Posted by Y2Kvert4me
I'm saying the wire of the rear sensor physically screwed into the left pipe runs up along the right side of the tunnel, and connects on the right side of the engine.
The wires for the sensor physically screwed into the right pipe euns up the left side of the tunnel, and connects to the harness on the left side of the engine.
Just like in the pic above.
The wires for the sensor physically screwed into the right pipe euns up the left side of the tunnel, and connects to the harness on the left side of the engine.
Just like in the pic above.
So they do cross then? Just kidding just kidding 
Now was that so hard.
Drifting
Joined: Oct 2003
Posts: 1,540
Likes: 0
From: bloomfield nj
Originally Posted by DRIVER456
OK whats the difference if you have headers or not,All I ask if the Rear O2 sensors cross or not.I'm running all 4 sensors.
if you are using 4 sensors there is no difference,it goes back like stock.but i was assuming you were talking stock and assumption is the mother of all f@#kup's.it's like going to the doctor and he gives you pennicillian,but you didn't tell him you're allergic to it.you could of been using only 2 sensors and moving the rears up front and i would be telling you the wrong info[it's different if you moved the rears into the collectors].no biggy
you'll love the headers!
Pro
Joined: Sep 2005
Posts: 538
Likes: 9
From: Geneva, IL Bring back the Chief!
St. Jude Donor '06-'07-'08-'09-'10,'13-'14,'19-'20-'21-'22
Originally Posted by dpd
you DIDN'T say you put HEADERS on it!!!! if you are running lg's with 4 sensors[2 front, 2 rear],you hook it back up JUST LIKE STOCK[rears cross].the SENSORS in the COLLECTORS go LEFT to LEFT,RIGHT to RIGHT,the SENSORS in the X-PIPE cross LEFT to RIGHT,RIGHT to LEFT
btw, I recently installed LG street series headers and labeled all O2 sensor wires. This is the way they go!
Thread Starter
Melting Slicks
Joined: Jun 2005
Posts: 3,088
Likes: 61
From: NY- 2013 Corvette Challenge Champion-2013 Index Combo Champion 2015 CC/MM Champion
St. Jude Donor '07
Yea but if your looking at the picture,NEVER MIND NEVER MIND I got it 
.......Thanks again ............Paul
.......Thanks again ............Paul
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
I got this straight from Mike Norris when I had removed my H pipe but didnt' pay any attention as to which harness went where.
The rears cross over.
But it doesn't really matter since they're only go/no-go in operation; and not used for AFR tuning.
If you connect them up backwards - nothing happens EXCEPT that if one goes bad, the failure code will point to the wrong side.
The rears cross over.
But it doesn't really matter since they're only go/no-go in operation; and not used for AFR tuning.
If you connect them up backwards - nothing happens EXCEPT that if one goes bad, the failure code will point to the wrong side.
Drifting
Joined: Oct 2004
Posts: 1,384
Likes: 8
From: Southwest Virginia
Originally Posted by Mike Mercury
I got this straight from Mike Norris when I had removed my H pipe but didnt' pay any attention as to which harness went where.
The rears cross over.
But it doesn't really matter since they're only go/no-go in operation; and not used for AFR tuning.
If you connect them up backwards - nothing happens EXCEPT that if one goes bad, the failure code will point to the wrong side.
The rears cross over.
But it doesn't really matter since they're only go/no-go in operation; and not used for AFR tuning.
If you connect them up backwards - nothing happens EXCEPT that if one goes bad, the failure code will point to the wrong side.
They do cross but as Mike said it don't really matter other than codes. The proof of this is the fact that O2 simulators work and keep the computer happy. As I understand it the only thing the computer does is make sure the rear O2 are not doing the exact same thing the front is doing, if they are your cat is bad and a code will be set. If installed left to left then even if a cat went bad the computer would probably never see it since it would be comparing the inlet of one cat to the outlet of another.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
