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1990 Cadillac DeVille 4.5L Excessive Emissions
Posted to GM Driveability on 2/4/2006 16 Replies

The complaint on this vehicle was high exaust smell in garage on warm up. Found car running very rich at all times. Found o2 sensor no voltage and badly fouled, replaced o2 sensor. Now o2 reading is around 800mv at all times, closed loop. Lab scope shows stead...

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  Related Documents & Media  1990 Cadillac DeVille

 
Message Closed w/FIX

car Vehicle Data

1990 Cadillac DeVille

VIN 1G6CD5330L
Engine4.5 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / PFI
EmissionsOBD1
SymptomsExcessive Emissions
OccursAlways
Message Closed w/FIX

car Vehicle Data

1990 Cadillac DeVille

VIN 1G6CD5330L
Engine4.5 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / PFI
EmissionsOBD1
SymptomsExcessive Emissions
OccursAlways