99 a6 abs light on ? and needs cat.
#2
www.bigdaddiesgarage.com
If the cat is really bad, you have to replace it. Before doing this, google the bad cat symptoms and see if you have those. If not, then your cat probably isn't bad and ecu throw a code due to ecu threshold too sensitive, narrow range. CEL on is an eye sore.
If the cat is really bad, you have to replace it. Before doing this, google the bad cat symptoms and see if you have those. If not, then your cat probably isn't bad and ecu throw a code due to ecu threshold too sensitive, narrow range. CEL on is an eye sore.
Last edited by bigdadi; 12-08-2010 at 07:09 AM.
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