smog help
03-12-2006, 10:46 PM
#1
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smog help
my 96 accord failed for high co . it was around 4 percent. the mechanic hooked his obd2 scann tool and found nothing wrong.the car runs great and has a brand new cat and o'2 sensor. what is going on???i put on 2 cats.still wont pass.grooss polluter staus.
03-14-2006, 10:59 PM
#2
if that high theres somthing seriously wrong with your car ,start with getting rid of and aftermarket performance mods ,if it's 100% stock car I would check the basics first like pulling the plugs to see how each cylinder is burning if it's even ,timing ,and maybe it's a bad PCM if it's California car it's backed with a 14 year /140,000 mile extended emission warranty.