As I search these forums for the cures for my cars minor problems I frequently come across a post that describes something that sounds a bit too familiar. It is like trying to self diagnose your own medical problems via the internet, after a few hours of looking up symptoms and causes you could easily convince yourself you are going to die in the very near future. So today while looking for a solution to my fuel pump issue I ran across a thread discussing overheated cats and running on one bank of cylinders. So first I am impressed that the engine will actually run on one bank of cylinders. Then I think about all the heat that comes off the exhaust system on my car and how recently it doesn't seem to sound like it is running correctly and I start to wonder "Is my car running on one bank?" Once I sort out the fuel pump issue, how do I make sure it is running on both banks and how do I check to make sure my cat is not clogged?