I previously posted because I was getting codes P0401 (Bank 1 Cat) and P0420 (EGR Low Flow) on my '96 4 cyl Contour.
I read many (MANY) searches about CATs and some felt that a good, hard run or loading the CAT with gas or another flammable cleaner could get it hot enough to burn off contaminents and "rejuvinate" it.
Well, after weeks of re-triggering the P0401 CAT code, I have embarked on a 2700 mile drive from NJ to AZ. After the first 700 miles that P0401 Code is GONE and does not return (I took along my scanner and reset the codes every 200mi to see when they recur).
Evidently, the high speed highway driving has helped. I have averaged about 72mph now for 1500mi (33mpg avg fuel consumption).
Bob
