Kia Troubleshooting Questions? Ask a Mechanic
Hi im kevin how can we help?
I dont have info on this model il opt out another tech will assist
Hello, so you have replaced the cylinder 2 coil and plug wires correct? Have you checked the spark plugs at all?
Alright. Is this a constant misfire on 2 and 5 or does it run good and just throw the code?
Hmm. It could be but if it was I would expect the issue to happen constantly. Let me do some research on Kia's information system and see if I can find anything.
Wow I am so glad you told me that. Did you have that done at the dealership?
Oh awesome! Well tell him to check the timing first. Those engines are tricky to time. If the timing is ok get back to me and we'll go from there
Ok, they couldn't link up to the PCM?
Ok unfortunately I think the only way to figure this one out would be to hook up the VMI (Vehicle Measurement Interface) which is a Kia special tool that is basically an oscilloscope and digital volt/ohm meter that you can hook up to the factory scan tool. You hook it up in line with the connector going to the cylinder 2 coil and monitor it while driving. This way you will be able to tell if the PCM is not signaling the coil to fire when the issue happens. If the PCM is dropping cylinder 2 for some reason cylinder 5 will go along with it because there is one coil for both cylinder 2 & 5. Doing this will eliminate any mechanical possibilities and basically tell you that it is an issue with the PCM. I just don't see another way of diagnosing this one. Hopefully the Kia dealer near you has a technician that knows how to use the VMI. Hopefully I at least gave you a path to go on, this is a tough one especially without the car in front of me.
If my answer has helped you, please help me by rating or accepting my answer. This does not cost you any more, it just allows me to be credited for my work. You can always ask follow up questions after rating or accepting. Thank you.
No problem, good luck.