Question about 1997 Lincoln Town Car

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Check engine light (code P430) comes on intermittently (approx. every two to three months) after drivers side (bank 2) cat. convertor and oxygens senors have been changed. Senors (2) are approx. three years old and the cat. convertor is less than one year old. Note: bank 1 cat. convertor and sensors were changed aprrox. three years ago. The car has 150,000 miles on it.

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  • urbano767 Jan 30, 2009

    Thanks for your response. Yes it is an after market convertor and both sensors (up stream and down stream) were chaned .

  • gailh_sunny Apr 15, 2009

    1997 Lincoln Towncar dies and is hard to restart. Also check engine light is continually on.

  • yadayada
    yadayada May 11, 2010

    P0430 - Catalyst System Low Efficiency Bank 2

    Was this a factory converter? aftermarket generic cats will set this code, u say both O2 sensors, do u mean the sensor before and after the cat? the sensor after the cat is not an O2 sensor.

  • Anonymous Mar 27, 2014

    I am getting poor mileage and was told that I need to replace the 02 senor.



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I think you will find the aftermarket Cat Conv. is the source of your problem, but without hooking up to the factory test equipment at my disposal at my Ford dealer this at best and educated guess based on 20 years of emission related work, I am a Ford certified master electronics technician

Posted on Jan 30, 2009

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I just put shell new nitro gas in it and check eng came on 1997 lincoln

Posted on Apr 05, 2009


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