1991 Cadillac DeVille 4.9L Excessive Emissions
hello, this thing failed smog for nox here are the readings, 15mph hc25, co0.01, nox725, co212.42, 023.12, at 25mph, hc 24, co0.00, nox924, co212.20, 023.37, egr is functioning properly, timing is at spec 10, o2 switches from 180 mv to 828 mv with a rise time ...
FIX posted 7/3/2007
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Vehicle Data1991 Cadillac DeVille
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Message Closed w/FIX
Vehicle Data
1991 Cadillac DeVille
VIN | 1G6CN533XL |
Engine | 4.9 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / sefi |
Emissions | obd1 |
Symptoms | Excessive Emissions |
Occurs | Always |