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1984 Cadillac DeVille 4.1L Excessive Emissions, Hesitation, Poor Fuel Economy
Posted to GM Driveability on 3/25/2006 24 Replies

Car came in barely running, found plugs black with carbon cleaned, found CTS plug broken replace sensor and plug found that O2 would not go above 600mv no matter what, replced.

Now O2 never goes below 700mv no matter what even with PCV pulled off the hose, in...

24 Replies Received (View Replies)

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car Vehicle Data

1984 Cadillac DeVille

VIN 1G6AM478XE
Engine4.1 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
SymptomsExcessive Emissions, Hesitation, Poor Fuel Economy
OccursAlways, Under Load
Message Closed w/FIX

car Vehicle Data

1984 Cadillac DeVille

VIN 1G6AM478XE
Engine4.1 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
SymptomsExcessive Emissions, Hesitation, Poor Fuel Economy
OccursAlways, Under Load