I bought a 2005 Tiburon and CEL keeps coming on preventing me from getting emissions test here in Ga. Private sale. Have spent over $500 at dealership but no success. They found and corrected 2 vacuum leaks and a bad vacuum valve. Keep getting code 271 and code 273 which is bank 1 (271) and bank 2 (273) running lean. I get one or the other sometimes both. Have replaced MAF sensor with a Bosh unit but engine was hesitant and jerky like missing. Engine ran real bad so reinstalled original. Have ordered a OEM MAF sensor but not in yet. Dealer has no clue as to solution. Any ideas?? Thanks in advance.
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