[Rubicon Dan]

What did you find was the problem? I have an 05 also that is doing the same thing. I replaced the pcm, 02 sensors map sensor and speed sensor, and continue to have problems.

 

[Rubicon Dan]

I have reoccurring codes p0031,037,051,057, and once in approx. 80-100 miles it throws a p0344. I have replaced all 4 02 sensors with NTK replacements and replaced OPD and cam sensor. code shows its an intermitant signal loss so have looked at grounds and have replaced negative battery cable just to verify a good ground