problem after header install. O2 sensors?
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
....(your headers installer) may have reversed the front right & left 02 sensor connections when they reconnected them...it's easy to do, as they do hook-up in a reversed arrangement from what appears is correct hook up arrangement ...this causes the PCM to do some weird things trying to correct this situation.
...of course, if this is not the case, as in Mission Impossible: "the Secretary will disavow any knowledge of this advice"....
...of course, if this is not the case, as in Mission Impossible: "the Secretary will disavow any knowledge of this advice"....
Pro
Joined: Jun 2002
Posts: 726
Likes: 45
From: Marquette MI
I have Stainless Works LTHs on my 02 and had lots of problems with front 02 sensor codes. I finally got a pair of rear 02 sensor adapters from LG Motorsports and put rear sensors in the front. No more problems. May be what you need. Also suggest that you use AC Delco sensors - not Bosch.
Thread Starter
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
I have Stainless Works LTHs on my 02 and had lots of problems with front 02 sensor codes. I finally got a pair of rear 02 sensor adapters from LG Motorsports and put rear sensors in the front. No more problems. May be what you need. Also suggest that you use AC Delco sensors - not Bosch.
Melting Slicks
Joined: Aug 2006
Posts: 3,124
Likes: 116
From: North Dallas Forty Orange County, Ca.
St. Jude Donor '08-'09-'10-'11-'12-'13, '15,'21
I am in the middle of my LG long tube install, just so I am clear in my understanding;
The front sensors are placed in the bungs on the side of their respective connector, the rear sensors are connected by crossing the sensor into the bung opposite of the side the connector.
The bungs for the rear 02 sensors are still installed to the rear of the cats.
Correct??
The front sensors are placed in the bungs on the side of their respective connector, the rear sensors are connected by crossing the sensor into the bung opposite of the side the connector.
The bungs for the rear 02 sensors are still installed to the rear of the cats.
Correct??
Thread Starter
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
I am in the middle of my LG long tube install, just so I am clear in my understanding;
The front sensors are placed in the bungs on the side of their respective connector, the rear sensors are connected by crossing the sensor into the bung opposite of the side the connector.
The bungs for the rear 02 sensors are still installed to the rear of the cats.
Correct??
The front sensors are placed in the bungs on the side of their respective connector, the rear sensors are connected by crossing the sensor into the bung opposite of the side the connector.
The bungs for the rear 02 sensors are still installed to the rear of the cats.
Correct??
Thread Starter
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Thread Starter
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
Racer
Joined: Jul 2006
Posts: 285
Likes: 1
From: Placentia CA
It’s just so the wires/connectors don’t have to make a 180 deg bend. Installed the right rear sensor wires point to the left side and the left rear sensor wires point to the right side. I’m sure there is a picture somewhere on the forum. Its just a cleaner way to run the wires.