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What is your question?
The reading from Catalytic convertor failed 3 emissions tests. What can I do to get a successful reading? Battery was recently replaced with a new one. Three mechanics gave me driving instructions. None of them worked.
1 Reply
Very good possibility the catalyst has been depleted to the point of unsatisfactory operations. In which case catalytic converter replacement will be required. There are test for this that should be performed. Good luck!