This is a 1999 Dodge 5.2 V8 in a Ram Van 1500 and it has always preferred to run on 5, 6 or 7 cylinders, never 8.
All the Chrysler TSBs for misfire were performed, the engine has new heads, burns no oil and has 150k and good compression all around..
Injectors removed, cleaned and tested, all new Autolite Platinum plugs, all new wires, new Bosch Oxygen sensors.
First success to get to 6 cylinders fireing was a new Crankshaft Position Sensor.
Next was to clean and re furbish the PCM module connector contacts and this got things to a reliable 7 cylinders.
I am out of ideas. Help!