First, sorry for the delay in getting back. I lost a family member and am trying to get back on track.
As far as the plugging, the catalytic converter is part of the exhaust system, an emissions component. Many times they will begin to melt down internally. When that happens, exhause can't exit the engine properly and causes all types of problems.
Let me know if you have other questions.
Friday, October 1st, 2010 AT 7:30 AM