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2007 - 2014 Expedition & Navigator 2007, 2008, 2009, 2010, 2011, 2012, 2013 and 2014 Ford Expedition and Lincoln Navigator

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Old 10-21-2011, 10:08 AM
07nav 07nav is offline
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Hesitation problems

Hi I have 2007 Lincoln navigator L 1000k*
I have a hesitation problem. This are the symptoms > when I use premium gasoline, the car skips/hesitates on the highway at over 2500rpm.*
When I use unleaded gasoline, the hesitation occurs at any speed!*
I got a p308 code. Changed the coil and the plug on #8, plus changed fuel filter and air filter. The car still runs the same (
Pls help. Eric.*
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Old 10-22-2011, 05:36 PM
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5.4T 5.4T is offline
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5.4T has a very good reputation on FTE.5.4T has a very good reputation on FTE.5.4T has a very good reputation on FTE.
try seafoam and run it real hard wont hurt
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Old 10-22-2011, 06:38 PM
07nav 07nav is offline
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Update! Changed all the plugs today, drove it for about 100 mi, the problem/hesitation seems to have gone away! Drives really nice
5.4T thnx for the reply. I tried A few fuel additives. I only had about 60k on the old plugs, so I didn't expect the plugs
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Old 10-22-2011, 06:38 PM
 
 
 
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