Rear O2 sensors And Idling Problems
#1
Teching In
Thread Starter
Join Date: Feb 2002
Location: NY
Posts: 18
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Would the removal of the rear O2 sensors cause my car to not idle? The rpm's hardly go up and popping noise comes out of the exhaust. By the way this happened after I finished installing heads on my car and the damn xpipe. Any help would be grealty appreciated!!
#3
Teching In
Thread Starter
Join Date: Feb 2002
Location: NY
Posts: 18
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
One more thing I forgot to mention, I also removed the EGR system and put restrictor plates where the valves used to go. Would this be the culprit?
#4
TECH Resident
Join Date: Nov 2001
Location: Barbaria
Posts: 943
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I had no rear O2s for a while and it ran perfect. As far as I know, rear O2s don't really do much of anything other than checking that the cats work.
You plugged up the holes, or don't even have any provisions at all?
You plugged up the holes, or don't even have any provisions at all?
#5
TECH Addict
Join Date: Dec 2001
Location: Cypress, TX
Posts: 2,264
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I had the same problem with the new cam, the headers and the off-road pipes before I installed the rear O2 simms. Sounds like your car is running really rich and has no back pressure in the exhaust. Once I installed the simms and the Borla plate, it idles much better and isn't running as rich.