need help, i bought this car a month ago, in as is condition put 1800.00 in to get it certified, the first etest was hc ppm limit 64 reading 82 = fail
no ppm limit 0485 reading 790 = fail
it passed curb idle had a code 172 oxygen sensor mixture too weak,
i replaced the sensor, took the car back today it failed again
hc ppm limit 64 reading 90 =fail
no ppm limit 485 reading 289 = pass
the curb idle passed everything again
It didnt fail by much but no obd codes display any problems, what could all possibilities be, any body else out there fix the same problem? if if failed dramatically it would be easier to fix.
the motor is a 2.0 dohc.
no ppm limit 0485 reading 790 = fail
it passed curb idle had a code 172 oxygen sensor mixture too weak,
i replaced the sensor, took the car back today it failed again
hc ppm limit 64 reading 90 =fail
no ppm limit 485 reading 289 = pass
the curb idle passed everything again
It didnt fail by much but no obd codes display any problems, what could all possibilities be, any body else out there fix the same problem? if if failed dramatically it would be easier to fix.
the motor is a 2.0 dohc.