Question about 2002 Lincoln LS

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I have a 2002 Lincoln Ls v8 and it gave me a po171 and now a po174 error code when I took it to Auto Zone. It is not losing power unless i am in idle for a long time. What could it be?

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Those code's could be bad o2 sensor's. but more then likely vacuum leak, I would check for vacuum leak first, a vacuum leak will give you those code's, and also run bad at idle.

Posted on Aug 24, 2010

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