Failed Smog test/test only smog station HC max 34/meas 39
at 25 mph cause? on 1993 Buick LeSabre

ECU is not throwing any codes. Car runs great, new plugs and wires, air cleaner, original Catalic converter, 209k miles
never had a problem b-4

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1 answer
REPL THE CATT CONVERTER THAT WILL SOLVE THE PROBLEM FOR SURE. HAT CATT IS JUST WORN OUTAFTER 210,000 MILES AND 9 YRS. YOU GOT YOUR $ WORTH