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1994 Chevrolet Camaro Z28 5.7L Excessive Emissions
Posted to GM Driveability on 9/17/2008 9 Replies

Vehicle is failing Nox at cruise. Cut off is 408ppm actual is 599ppm. Found EGR not being commanded on during test. I can not find what criteria has to be met for egr to be commanded. Egr does function properly when manually grounded from PCM. Pre Cat readings...

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  Related Documents & Media  1994 Chevrolet Camaro Z28

 
Message Closed w/Summary

car Vehicle Data

1994 Chevrolet Camaro Z28

VIN 2G1FP22P2R
Engine5.7 L / 8 cyl / GAS
Trans5-speed Standard
DeliveryFI / mpi
Emissionsfed emission
SymptomsExcessive Emissions
Misc.Excessive NOx
Message Closed w/Summary

car Vehicle Data

1994 Chevrolet Camaro Z28

VIN 2G1FP22P2R
Engine5.7 L / 8 cyl / GAS
Trans5-speed Standard
DeliveryFI / mpi
Emissionsfed emission
SymptomsExcessive Emissions
Misc.Excessive NOx