If the converter was glowing red hot, that is most likely the entire problem. Replace it. It was red because it is plugged up inside. That is most likely what was causing the idle issues.
Let me know if it takes care of the problem. By the way, this doesn't mean it is the start of a lot of problems. We now know the converter is bad. That should take care of the problem. If you want to try it before you get a new one, just remove the old one and start it that way. It will be loud, but you should be able to tell a difference in the way the engine is running.
PS: An extreme rich mixture could have caused the converter to plug. However, age and miles do the same thing.
Friday, August 23rd, 2013 AT 7:57 PM