RE: [DML] Bad Cat?

["John Hervey" <john@xxxxxxxxxxxxxxxx>]

Nathan, 
In working with the factory that builds the cat's the 2 things that render
the cats non effective is they get clogged up and won't pass the exhaust
properly. 
The second thing is the precious metal that coats the block is also rendered
useless when the car is flooded a lot and has the glow and is burned up.
Flooding for extended periods of time will also render the 02 sensor useless
also because it also is coated with a precious metal. 
Proper maintenance with tune ups and fixing gas smells at the first signs 
can and will prolong the life of the cat and 02. 
As it stands now, 25+ years old they need to be checked.
The block which is the part of the cat that does the work can't be looked at
and determined if it's good or bad. 
John Hervey
www.specialtauto.com

   

-----Original Message-----
From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of
valleyrat12
Sent: Wednesday, December 14, 2005 1:36 PM
To: dmcnews@xxxxxxxxxxxxxxx
Subject: [DML] Bad Cat?

I pulled my Cat today, lookied inside and there is a screen but I can 
shine light through from one side to the other.  I admit I do not know 
much about them other than there is platinum inside them. I am pretty 
sure this is the original that came with the car. Is there any way to 
tell if it is bad by looking at it?

Nathan





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