08 4.6l misfire

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Old Nov 29, 2009 | 06:52 PM
  #1  
d2gprerunner's Avatar
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From: Riverside, CA
08 4.6l misfire

last night my truck started missing violently at a stop light, it threw a code (cyl 3 misfire). i got it home disconnected the battery and reconnected it this morning, now it idles fine in park and Neutral but once its under load it wont rev out over 4k and takes forever to get there. im pretty sure its the coil pack that went bad but after looking for a replacement all i can find is the autozone ones and im pretty sure this isnt covered under warranty even tho the truck only has 24k miles on it.

any recommendations of a good replacement packs and plugs. it has the stock exhaust and intake still.
 
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Old Nov 29, 2009 | 08:26 PM
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Matts ford's Avatar
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take it to the dealer, should be covered under warranty.
 

Last edited by Matts ford; Nov 29, 2009 at 08:28 PM.
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Old Nov 29, 2009 | 08:33 PM
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Originally Posted by Matts ford
take it to the dealer, should be covered under warranty.
Yes! swapping coils it also the easiest way to find if you coils are bad.
 
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Old Nov 29, 2009 | 08:34 PM
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Fordfanatic101's Avatar
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it is should be covered under warranty you have a 36,000 mile bumper to bumper
and a 60,000 mile Powertrain warranty
 
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Old Nov 30, 2009 | 10:20 AM
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glc
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Being that the factory recommended plug change interval is 100k and there is no recommended change interval for the COP's, it should definitely be covered under warranty.

If you want to change them yourself anyway, use OEM Motorcraft plugs and DG508 coils from Global Automotive or Uneek Supply on Ebay.
 
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Old Nov 30, 2009 | 11:35 AM
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d2gprerunner's Avatar
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thanks, i wasnt sure and was dreading taking it in if it was on my dime after finding the ford cop priced out at 129 a piece not including the 104$ and hour for labor up here.
 
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