Hi
I have been chasing several engine fault codes on my 1995 XJS V12 6.0 OBD I
The one issue that keeps coming back is the FF67 for the air injection pump, I pulled the air injection rails and cleaned up the carbon-filled nozzles, and I changed the 2 faulty air check valves, I checked the air pump operation to confirm it's working OK, however the code keeps coming back after a short drive
I pulled the 2 catalytic converters out and found that the left side is broken inside possibly from an earlier issue of over-fueling in the B bank, Both cats are now empty and free-flowing there is no need for air injection since there are no working cats. so I disconnected the air pump plug
is there any way to "trick" the trip computer so I don't get the FF67 fault code?
has anyone been faced with the same issue?

 

I removed my system and the light came on. Only solution I could find was custom firmware for ECU which was prohibitively expensive so I put the crap back on.....

 

Thank you, Roger
I will contact you when I am ready
I did get the rails removed and the holes plugged
I am experiencing another bothersome fault code FF14 for the temp. sensor, 3 sensors have been replaced including a factory sensor, and correct thermostats for the 6.0 have been installed and the circuit has been checked tracing all the way to the ECU, it appears that this code popes on every 150 to 200 miles of driving
Will the eprom take care of that?