i've been chasing a misfire in my 3.9 for the last couple months. last week i needed to burb my cooling system and the misfires i've been having didn't go away but were not as severe. along with this last week being cooler. i know my problem is related to temp somewhere in my engine but where? i checked my ambient air temp sens and compared it to the cooling temp sens. both were close 6.43K and 6.54K ohms. my battery temp was at 8.5K ohms. the temp was around 85F so everything appears normal. its just when the engine is warming up that my dakota misfires. i used to get the P0300 code but not anymore. if i go through and disconnect the sensors it shows that but not misfires.
does anybody have a clue as to what triggers the system to begin looking for the misfire? or have had the same problem and know the fix?
please help me!!!!!

 

P0300 is a multiple cylinder misfire fault
ambient air temp sens - cooling temp sens-battery temp is not causing this.
Problem could be: plugs-coil-injectors-cam or crank sensor erratic-pcm-
You really need a scanner to figure this out correctly and see if the adaptive numerator is learned. You need to see which cylinder is counting a misfire. start with the easy repair...pull all your plugs and wires and look for spark arching on the plug and boot.
pull the distributor cap and rotor out and look for spark arching...try another coil pack.
try flushing your injectors out.
Does anyone know of a forum similar to this one but for Chrysler techs only?