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1984 Cadillac DeVille 4.1L Excessive Emissions, Poor Fuel Economy, MIL Lamp on
what would make the vehicle continue to run rich when the O2 reads rich and the fuel pressures is normal? Would the rich O2 cause the vehicle to become a little bit leaner?
FIX posted 12/6/1998
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Related Documents & Media 
| VIN | 1G6AM4784E |
| Engine | 4.1 L / 8 cyl |
| Emissions | CA Emmissions |
| Symptoms | Excessive Emissions, Poor Fuel Economy, MIL Lamp On |
| Occurs | Always |
| Misc. | Gm's Cadillac Dfi |
Trouble Codes
| 45 | Exhaust always rich |
Message Closed w/FIX
Vehicle Data
1984 Cadillac DeVille
| VIN | 1G6AM4784E |
| Engine | 4.1 L / 8 cyl |
| Emissions | CA Emmissions |
| Symptoms | Excessive Emissions, Poor Fuel Economy, MIL Lamp On |
| Occurs | Always |
| Misc. | Gm's Cadillac Dfi |
Trouble Codes
| 45 | Exhaust always rich |
Video