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Re: Braking the Ceramic Stuff out of my CAT's...
In a message dated 98-05-28 01:16:54 EDT, you write:
<< I don't know about your vintage, but recent Audis (both 2.8 V6 and 1.8T)
have oxygen sensors *before and after* the catalytic convertor (yes, four
sensors total on the V6). This is to provide the computer with information
about whether the cat is working. On these cars, a failed cat will
generate a fault and stored in fault memory.
That started with OBD II engine systems in 95