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Hello. This misfire is only present at idle? It runs fine in the higher rpm?
Ok. I suspect you have replaced the cap and rotor when you did the plugs and wires? I would do that since those are regular maintenance items and often times resolve rough running conditions. It does sound though like a vacuum leak. Often times due to a bad egr valve. Has that been replaced? Have you looked over all vacuum lines under the hood and looked for any signs of damaged or crumbling vacuum lines? listened for a sucking type sound when idling?
Yes. please check over the vacuum lines well, listen for whistling or sucking type sounds, etc. Replace cap and rotor as well. Please let me know how that goes and if the problem has not been identified at that point, we will keep at it until we figure it out.
No worries. The reminders to rate are automatically sent out. I dont have control over it. Let me know if you need anything else.