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2004 Lincoln Navigator Question: Emission Systemm

 

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Javier, Killeen, TX, July 14, 2009, 22:12
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my emission light started staying on & my navigator is not running smoothly. seems to be running rough and wants to stall. Any feedback would be helpful, I already replaced the DPFE sensor and the vehicle start driving smooth then start jerking again and it had cause my truck to go off couple of times. The mechanic check everything including spark plugs and coils. And the only alarm that comes on the computer is the EGR sensor

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