Hi guys, I am new to this forum but I have read many threads about multiple things regarding stalling, dying, rough idles and have been searching endlessly trying to find a good relation to what my problem is. I have a 1994 Jeep Grand Cherokee V8 5.2L and I think it is a ZJ from doing some research. I am so frustrated with this issue. I have replaced fuel pump, fuel filter, did complete tune-up about 3 months ago. The problem is somewhat similar to others. I usually have no issues starting it when its cold only when it gets to normal temperature and then it usually starts my problem. My voltage starts out normal but as it warms up it slowly goes down while driving to around 12 volts. And when warm if I turn it off and then try to start it again, the volts will be low and it idles low and kinda rough and if I try to put it into reverse, it sometimes will die or at least, the RPMs will go really low and almost dies. Now this is only happening when it is warmed up. New battery in it also. Took it to get it tested at Autozone and battery passed, but he said my voltage regulator failed and I think he said diodes passed also. So I then asked him if the voltage regulator could just be replaced and he told me no that it was internally in the Alternator so I thought it was in the PCM. So I did buy the new alternator but it changed absolutley nothing so I took it back out and took it back for a refund. So if anybody can help me with this confirming that I need to replace my PCM. so as my jeep warms up, the problem starts so is the PCM getting too hot? Or could it be the IAC? Please help as I have 4 kids that I have to take back and forth to school everyday. Thanks a lot and I appreciate it very much.