Trying to fix that for some 5+ years, 96 Concorde LXi 3.5 L, 145 000 km, ocasionally engine stalls, needlessly checked/replaced everything except PCM (replaced PCM with factory new unit at 60 000 km - reason: cooling fans were continusly on even with A/C off) , have factory repair manual, the only code 12 (do not tell me to clean up battery terminals - done that), 3 different mechanics could not find the problem. Chrysler dealer checked for latest software - O.K. Starts up within 1/2 sec, regardless of the weather, temperature, air moisture etc. About 20 000 km ago when started up at night, the head lights went very bright than the engine stalled, shortly after that I had to replace head light bulbs - I know the alternator regulator is inside the PCM.
Question: any clues why this happens ? Or is it faulty PCM ?