First detected a P0304 cylinder #4 misfire. Swapped coils on cylinder #4 and 6. Subsequent codes were P0300 (random misfire) and P0304. If the original #4 coil was bad, why did 0300 pull instead of 0306 after the swap??

thanks

 

My guess is the computer already had the #4 misfire, you switched the coils, then it saw a #6 misfire. In the computer memory it had both the #4 and #6 misfire, to the computer that meant random misfire. I'm not sure I worded that correctly?

If you had erased the first code before you swapped the coil, I'm not sure if you would have only got the #6 misfire instead of the random code? Interesting

 

check your spark plug wires that causes problems.

Chris

 

the dakotas dont have wires so to speak they each have individual coils on each spark plug...its weird

 

Its called coil on plug. i would swap the plugs if i were you. otherwise besides the coils themselves you may be looking at an injector.