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1990 Chevrolet Corvette 5.7L Excessive Emissions, MIL Lamp on
Posted to GM Driveability on 1/12/2005 7 Replies

To all technicians,

I have a 1990 Corvette that failed the enhance smog check. The NOx emission was above 1700ppm at 15mph and 25mph. The reason for the high NOx was due to an EGR valve not opening. After replacing the EGR valve, I was able to monitor at leas...

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Message Closed w/FIX

car Vehicle Data

1990 Chevrolet Corvette

VIN 1G1YY338XL
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / T.P.I.
EmissionsOBD1, CA
SymptomsExcessive Emissions, MIL Lamp On
OccursCruise
Misc.Convertible

Trouble Codes

32EGR system
Message Closed w/FIX

car Vehicle Data

1990 Chevrolet Corvette

VIN 1G1YY338XL
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / T.P.I.
EmissionsOBD1, CA
SymptomsExcessive Emissions, MIL Lamp On
OccursCruise
Misc.Convertible

Trouble Codes

32EGR system