How would one go about testing for a plugged or disfunctional Catalytic Converter (California)?
I've had intermittant power loss - see discussion at the following link:
ML320 loses and gains power
and I don't believe that I have fuel pump problems, as I replaced both of them myself approximately 1 year ago.
I am getting some smell from underneath the passenger compartment, but it is more of a sweet fuel smell then a rotten egg sulfer smell.
Is there any inexpensive fault isolation that I can perform on the Cat prior to going to the expense of replacing it?
Thanks in advance for your suggestions.