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1993 Cadillac DeVille 4.9L Excessive Emissions
Posted to GM Driveability on 2/2/2004 10 Replies

Hi, This car came in with a high nox failure. The egr tubes under the throttle body were stopped up, the timing was set at 25* btdc. Now these items are working fine, i can see the egr opening when the engine is loaded in gear. Looking at scan data,it doesn't ...

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Message Closed w/FIX

car Vehicle Data

1993 Cadillac DeVille

VIN 1G6CD53B5P
Engine4.9 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD1
SymptomsExcessive Emissions
OccursAlways, Under Load, Cruise
Message Closed w/FIX

car Vehicle Data

1993 Cadillac DeVille

VIN 1G6CD53B5P
Engine4.9 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD1
SymptomsExcessive Emissions
OccursAlways, Under Load, Cruise