P2311 Dodge -

Question

my truck runs smooth but i have p2311 trouble code

Answer 1

If you have not replaced the spark plugs and boots (the wires) as a tune up, you will need to do so if you still have the problem after that you can try to swap the ignition coil 4 with another cylinder and see if the code moves over to the other cylinder, if is does then you know the ignition is bad.