02 Sensors
07-15-2018, 12:02 AM
#1
Pro
Thread Starter
02 Sensors
Question, are the downstream 02 sensors the same on both sides?
And do anyone know the part number.
2007 LS2
And do anyone know the part number.
2007 LS2
Last edited by Bat66; 07-15-2018 at 12:04 AM.
07-15-2018, 06:07 AM
#2
Safety Car
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07-15-2018, 12:23 PM
#3
Just a FYI, but the down stream sensors monitor the cats only.
So if it just one sensor that seems to have a problem, move the sensors so they are on the opposite sides, and make sure that the problem moves with the sensor as well.
If the problem sticks to the one side with the sensor swapped, then it's a wiring or cat problem isntead.
Also to point out, if you installed long tube headers and high flow cats, this is going to cause a problem in itself. Hence the high flow cats mounted back farther in line are no going to be as effective as the OEM cats, and this will cause the code problem as the Rear O2 are monitoring the differential reads pre and post cats. So the solution is to delete the rear o2 sensor, turn them off in the tune, and all is good again.
Again, the only thing that the post cat 02 sensors do is monitor the cats. Its the pre 02 sensors that the car uses in closed loop for the tune isntead.
So if it just one sensor that seems to have a problem, move the sensors so they are on the opposite sides, and make sure that the problem moves with the sensor as well.
If the problem sticks to the one side with the sensor swapped, then it's a wiring or cat problem isntead.
Also to point out, if you installed long tube headers and high flow cats, this is going to cause a problem in itself. Hence the high flow cats mounted back farther in line are no going to be as effective as the OEM cats, and this will cause the code problem as the Rear O2 are monitoring the differential reads pre and post cats. So the solution is to delete the rear o2 sensor, turn them off in the tune, and all is good again.
Again, the only thing that the post cat 02 sensors do is monitor the cats. Its the pre 02 sensors that the car uses in closed loop for the tune isntead.
Last edited by Dano523; 07-15-2018 at 12:26 PM.
07-15-2018, 11:32 PM
#4
Pro
Thread Starter
Just a FYI, but the down stream sensors monitor the cats only.
So if it just one sensor that seems to have a problem, move the sensors so they are on the opposite sides, and make sure that the problem moves with the sensor as well.
If the problem sticks to the one side with the sensor swapped, then it's a wiring or cat problem isntead.
Also to point out, if you installed long tube headers and high flow cats, this is going to cause a problem in itself. Hence the high flow cats mounted back farther in line are no going to be as effective as the OEM cats, and this will cause the code problem as the Rear O2 are monitoring the differential reads pre and post cats. So the solution is to delete the rear o2 sensor, turn them off in the tune, and all is good again.
Again, the only thing that the post cat 02 sensors do is monitor the cats. Its the pre 02 sensors that the car uses in closed loop for the tune isntead.
So if it just one sensor that seems to have a problem, move the sensors so they are on the opposite sides, and make sure that the problem moves with the sensor as well.
If the problem sticks to the one side with the sensor swapped, then it's a wiring or cat problem isntead.
Also to point out, if you installed long tube headers and high flow cats, this is going to cause a problem in itself. Hence the high flow cats mounted back farther in line are no going to be as effective as the OEM cats, and this will cause the code problem as the Rear O2 are monitoring the differential reads pre and post cats. So the solution is to delete the rear o2 sensor, turn them off in the tune, and all is good again.
Again, the only thing that the post cat 02 sensors do is monitor the cats. Its the pre 02 sensors that the car uses in closed loop for the tune isntead.