Just had my throttle body and idle air control valve replaced bc when I took my foot off the gas it would die. Now it's working fine. But went to get it inspected failed the emissions test. Here are the results :
High Speed Emission Results
Hc(ppm) 206 Fail
CO (%) 1.70 Fail
CO2 (%) 13.0
02 (%) 0.2
Low Speed Emission Results
HC (ppm) 149 Fail
CO (%) 1.41 Fail
Co2 (%) 13.2
02 (%) 0.2
The Nox (ppm) and Dilution both passed
I was told it is running too rich, that it was using too much gas and not enough oxygen. Could anyone tell me what the problem might be or what to check first to pass inspection? Thank you very much