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maybe but many persons with no air pump and EGR on a 84 vette said they are no troubles code !! i don't understand if yes or no we have a error code on crossfire without air pump and egr maybe my car 's running too cold and O2 sensor could not be enough hot to have the good voltage ! a stock...

teher is no air pump on my car . EGR is necssary or can i unplug the connecteur on egr valve ? : effects on Co ??

hello, i'm in France and i must do a pollution test every 2 years ! my co emissions are too important on my 84 vette ...the controler man said me : my carburation is too rich ! but i had a code 44: lean exhaust. my O2 sensor , air filter ,fuel filter ,coolant sensor and spark plugs are new...