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1993 Cadillac DeVille 4.9L Excessive Emissions
Posted to GM Driveability on 8/25/2005 10 Replies

ok first let me say thanks all this car fails loaded mode smog test nox limit is 687 has 1228 15 mph, vacuum signal is good at 15in pluged, but only 2 in when conecet to valve, if i restrict the exhause by 25-30 % then i get 14 in vacuum to valve and nox drops...

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  Related Documents & Media  1993 Cadillac DeVille

 
Message Closed w/FIX

car Vehicle Data

1993 Cadillac DeVille

VIN 1G6CD13B7P
Engine4.9 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / PFI
EmissionsOBD1 CA
SymptomsExcessive Emissions
OccursAlways
Message Closed w/FIX

car Vehicle Data

1993 Cadillac DeVille

VIN 1G6CD13B7P
Engine4.9 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / PFI
EmissionsOBD1 CA
SymptomsExcessive Emissions
OccursAlways