Stumbling Dying Pathfiner
I have a 2001 Pathfinder that has gone through the gamut of SES codes including the 0420, 0430, 1140, and so on. So I have corrected these issues by replacing the two front cam position sensors and all four O2 sensors. I also took the Pathfinder to the local dealer and had them update the ECM software according to the Nissan Bulletin relative to these SES codes. So I now have a vehicle with no SES codes. However, the initial problems I was having (other than SES codes) still persist.
First, the vehicle slightly stumbles on acceleration of the line and even worse under hard acceleration. The stumble seems to occur between 2500 and 4000 RPM. Second (and most aggravating), the vehicle will not idle at a traffic light or stop sign for more than 20-30 seconds. After that, the engine dies. This problem persist whether in Drive or in Park. Another note relative to these two issues, they only occur after the engine warms up. Additionally, these issues seem to be getting worse. At the onset of these problems, I could turn on the AC and that would seem to place enough load on the engine to keep it running. Not sure why. I have also had the alternator and battery checked and both function properly.
If anyone can offer any insight as to what might be the root cause of these two issues I would greatly appreciate the help.