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1997 lincoln town car lean burn problem

As i indicated before i have replaced the oxygen sensors but i continue to get "check engine" light and the trouble codes are PO171 and PO174. on occasion the car stalls after a long drive while in idle position.

thanks so much for your help,

jim

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  • reggo4u2c Nov 22, 2008

    I think I have the same code but it reads catalytic converter Bank 1. On my car there are 4 catalytic converter but have no idea witch one is the bank 1

  • kleusch Apr 05, 2009

    Have the sames codes on my 99 4.6. cleared the codes ,went to fill up with 91 oct. thought maybe last fillup accidently put in 87 oct. Still waiting to see if codes pop up again

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SOURCE: Lean burn problem on 1997 Lincoln Town Car

need to check for codes
get the codes and let me know
possible vacuum leak and or MAF sensor
is the cause

Posted on Nov 11, 2008

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What do code p1131 mean on a Lincoln Continental 2002


Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 1
In simple terms, it means the engine computer is not "seeing" the O2 sensor switch from rich to lean like it should be doing.
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Read more: http://www.autocodes.com/search_codes.php?q=p1131#ixzz43ZjTgHzk


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I have a 1997 towncar I had a plugged convertor, the second one i cut a patch out and cleaned it out, welded it back up, now i have a check engine light on. The oxygen sensors are in front of the...


It won't mess up the a/f ratio. The Check engine light will be on because of the rear O2 sensors. To keep the light off you will need to install O2 sensor simulators.

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Lean burn problem on 1997 Lincoln Town Car


need to check for codes
get the codes and let me know
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is the cause

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Oxygen Sensor


Bank 1 is the side that has # 1 cylinder in it, the sensor is located in the exhaust head pipe before the Cat Converter, one note of caution: an O2 code does not always indicate an O2 sensor problem, it depends if the code is a lean code or a rich code, lean may may be a sensor, rich is never a sensor, lean codes can be caused by all kinds of issues, a bad MAF, a vacuum leak from hoses or a leaking intake gasket, an injector problem and so on. Good luck hope it is the sensor.

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