LostX
Newbie
So a little background on the truck is its a 96 model k3500 with the 7.4 vortec engine. My issue is that at some point some previous owner gutted both catalytic converters (they are hollow). I am planning on redoing that portion of the exhaust with new catalytic converters soon. The issue i have is that even though the cats are gutted, and there are numerous exhaust leaks before and after the cats, the computer has never thrown a light or code for any rear O2 issues. I can verify the rear O2 sensors are in place and connected to the harness. If I put new cats in I would like to have that portion of the engine computer that verifies catalytic converter efficiency working.
Is it possible a previous owner had the factory 96 computer tuned to remove that feature, or is there another thing I could be looking at?
Is it possible a previous owner had the factory 96 computer tuned to remove that feature, or is there another thing I could be looking at?