Random(usually when hot) stalling.
 

Hello, looking for wiring guidance with my 2001 GC limited. 4.7 v8. New to me, purchased a few weeks ago, from the start I have had this ghost electrical problem( my research shows many have similar problems). I have determined its electrical, not mechanical. I have fuel pressure and when it stalls it just dies, no sputtering or misfiring, or anything else unusual. just stalls. usually the SKIM locks me out, for a seemingly random amount of time. I thought I solved the lock out problem by replugging the loose black terminal to the PCM but it finally locked out after it stalled again the other day. The immobilization and the stalling go hand in hand usually. I took it to my dodge jeep dealer and they scanned it. The vehicle has PCM communication but no Cam or crank sensor communication. But there is obviously a signal to the cam and crank, thats how it runs for...15-30 minutes before stalling. The engine is not over heating, and fuel delivery is fine. I am thinking I have an issue with wiring to the PCM or the PDC (via ASD relay). or possibly dirty wire terminal( the thing was barely plugged in and very loose when I bought the vehicle.

So my question is that I need a wiring diagram for the SKIM(mabey ignition?), and definately help understanding the relation between the SKIM and the wiring to my black PCM terminal. And If i am mabey on the right track on figuring this ghost out. I went to my local pick n pull and pulled 2 cam and crank sensors, all 3 PCM terminals(grey, white and black) and two ECU terminals from 01'-02' GC'S.

Re: Random(usually when hot) stalling.
 

Don't think I can be much help, I don't see how the scan cannot read the cam and crank sensor, I assume the tach reads rpm. I tried to find a similar problem on a mini van of the same era, I was not the only one who worked on said vehicle, we never did find the problem. One of the suggestions that was mentioned to me after the fact was to add more grounds to the computer, I did not try it but you never know. please post if you find anything. I do not have the diagrams but they should be on the michells manuals, if you klnow someone who has access. good luck...