Thread: Car question
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Old 12-10-2011, 10:34 PM   #14
plthijinx
Master Dwellar
 
Join Date: Aug 2003
Posts: 4,197
i talked with a friend of mine about this. we came to the same conclusion. if the "good" gas doesn't solve your problem, replace both of the o2 sensors at the cat first. then if you still get the codes, you have a bad cat.
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