I have a 1999 Chevy Cavalier
My 1999 Cavalier failed smog at the 15mph test. The CO2, HC, CO were all low - not even close. But the NO at 15 mph failed. The
25 mph test had no problem. NO @ 25 mph measured 144, Max allowed was 746. So
well below. NO @ 15 mph measured 752, Max allowed was 459. So It failed badly.
Any suggestions? I first thought the Catalytic converter BUT, it passed easily
at 25mph. So maybe the O2 Sensor? Any suggestions? Thanks, I drive it mainly on
freeway to work and back. I drive alot of miles.
My 1999 Cavalier failed smog at the 15mph test. The CO2, HC, CO were all low - not even close. But the NO at 15 mph failed. The
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jmrec100
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jmrec100
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