Leaderboard

EMISSIONS HELP CO high, co2 low hc high, o2 high - rich mixture with ignition misfire CO high, co2 low hc high, o2 low -faulty thermostat or coolant sensor CO low, co2 low hc low, o2 high - exhaust leak after cat CO low, co2 high, hc low, o2 high - injector misfire, cat ok CO high, co2 low, hc medium to low, o2 high - rich mixture CO high, co2 high, hc high, o2 high - injector misfire, cat not working, combination of rich mixture and vacuum leak CO low, co2 high, hc low, 02 low, good afr and cat operation- system normal . lambda typical range 0.97 to 1.03 [ ideal lambda 1 ] The emissions limits to be met are specified for both the fast and normal idle tests. At fast idle, CO must be at or less than 0.2%, HC at or less than 200 parts per million (ppm), and the lambda value(1) must be between 0.97 and 1.03. At normal idle, CO must be at or less than 0.3%