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Posted on Jul 21, 2009
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2000 Lincoln Navigator with rough idling and service engine light

2000 Lincoln Navigator - few days ago started idling very rough when truck is at a stop or in park. Service Engine Light came right around time I noticed that it was idling rough when stopped. Went to Advanced Auto Parts and the following codes came back P1131; P1151; P0171; P0174; What could be wrong??

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  • Posted on Jul 25, 2009
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I had the same trouble, there is a rubber boot under the cover on the top of the motor, it is coming from the egr valve, takes about 5 mins to repair and less than 5 dollars.

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  • Posted on Jul 21, 2009
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I dont know about the codes but that could be a fuel pump problem a begining of mass air flow sessor or maybe just need a good tune-up!
any probleme with your battery??

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2000 Lincoln Navigator - few days ago started idling very rough when truck is at a stop or in park. Service Engine Light came right around time I noticed that it was idling rough when stopped. Following...
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P1151-Lack of HO2S-21 Switch ,Sensor Lean
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PO174-Systen to Lean (Bank 2)

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2009-10-07_190044_3.gif
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