Mechanics

ASM EMISSIONSTEST RESULTS

1996 Ford Aerostar

1996 Ford Aerostar 4 cyl Two Wheel Drive Automatic

on the NO (PPM) failed what does that mean?
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Shirsassy
September 3, 2009.



NO stands for Nitric Oxide. PPM stands for parts per million. The vehicle is producing too mucn nitric oxide.