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4.6 trouble(Miss fire)

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Old 10-28-2008, 08:17 PM
  #21  
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Thanks I'll give it a shot.
In the mean time I appreciate any and all suggestions.
Old 12-01-2008, 02:59 PM
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Does anyone know what code P1401 is?
Old 12-01-2008, 03:27 PM
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you have a bad DPFE sensor I think.


John
Old 12-01-2008, 09:14 PM
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Okay thanks, I appreciate the help, what makes you think DPFE Sensor!
Old 12-02-2008, 02:51 PM
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06 f150 5.4 v8
 
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I had the same problem with the spark plugs being a diff brand then got motocraft and work great.
Old 04-21-2009, 05:55 PM
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I finally took it to the Ford dealer, the mech found the #8 cylinder misfiring and he replaced the COP and the problem went away.
Old 09-28-2010, 10:23 PM
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i have a 2007 f150 with a 5.4 in it changed the plugs and checked the coils, took it to auto zone they scanned it and cylinders 1,2,3,and 4 were not firing.... anyone no the solution



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