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1999 Cadillac DeVille 4.6L Excessive Emissions,
Posted to GM Driveability on 5/24/2012 8 Replies

Came in with P0440 and failed emissions, HC. Found stuck closed purge valve and cracked gas cap seal. New gas cap and purge valve, ran Service Bay Test, passed. Found worn plugs and wires. Customer has Autolite Platinum AP104 plugs installed, unknown wires. Fo...

8 Replies Received (View Replies)

  Related Documents & Media  1999 Cadillac DeVille

 
Message Closed w/Summary

car Vehicle Data

1999 Cadillac DeVille

VIN 1G6KD54Y0X
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / SFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions,
OccursAlways
Message Closed w/Summary

car Vehicle Data

1999 Cadillac DeVille

VIN 1G6KD54Y0X
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / SFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions,
OccursAlways