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1992 Buick Century Special 3.3L Excessive Emissions, Poor Fuel Economy
I inspected the sensors & wave forms on simutech,all voltages ,wave forms looked [...] car emissions is lean at idle. Then at any other speed it is very erratic and rich. Fuel system and pressure test in spec.
FIX posted 12/22/1998
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| VIN | 1G4AG54NXN |
| Engine | 3.3 L / 6 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / PORT FUEL INJ. |
| Emissions | US FED. |
| Symptoms | Excessive Emissions, Poor Fuel Economy |
| Occurs | Always |
Trouble Codes
| 31 | park-neutral switch |
| 44 | rich |
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Vehicle Data
1992 Buick Century Special
| VIN | 1G4AG54NXN |
| Engine | 3.3 L / 6 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / PORT FUEL INJ. |
| Emissions | US FED. |
| Symptoms | Excessive Emissions, Poor Fuel Economy |
| Occurs | Always |
Trouble Codes
| 31 | park-neutral switch |
| 44 | rich |
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