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1991 Cadillac DeVille 4.9L Excessive Emissions
Posted to GM Driveability on 6/27/2001 8 Replies

here is a cadi,.. which will not pass emmisions. I have work on this all 8 hrs today. I've check ECT, MAT, Fuel pump fuel regulator, timing (at 12 degrees) and did a full tune-up, (cap,rotor,plugs, and wires) I can't seem to get the hydro carbons under 800. I ...

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  Related Documents & Media  1991 Cadillac DeVille

 
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car Vehicle Data

1991 Cadillac DeVille

VIN 1G6CD53B4M
Engine4.9 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / PFI
EmissionsUS FED.
SymptomsExcessive Emissions
OccursAlways
Message Closed w/FIX

car Vehicle Data

1991 Cadillac DeVille

VIN 1G6CD53B4M
Engine4.9 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / PFI
EmissionsUS FED.
SymptomsExcessive Emissions
OccursAlways