Question about 1993 Buick Century

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1993 Buick Century Custom 3.3L Runs Rich, Ruff at idle; 10MPG

Car runs rich, smells at tail pipe, ruff at idle; fuel mileage is at about 10MPG
Check engine light is not on but does work.
1. New o2 Sensor
2. New Mass Air Sensor
3. New Engine Control Computer (used old PROM did not buy new one)
Fuel pump is relatively new.
Good plugs and wires
Checked all fuses.
Sick of throwing parts at this car.

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  • peteprobinso Jun 15, 2009

    Thank you. I did replace it a few months ago. This has been a 6 month project off and on when I have time.



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Check the fuel filter, it might be clogged.

Posted on Jun 15, 2009


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