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2004 - 2008 F150 2004, 2005, 2006, 2007 and 2008 Ford F150's with 5.4 V8, 4.6 V8 or 4.2 V6 engine
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Old 02-11-2013, 07:31 PM
TriciaH01 TriciaH01 is offline
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Misfire driving me insane

I have a 2007 Ford F150 4x4 flexfuel truck. I also have a programer. Last summer had a P0301 come up, I have changed all spark plugs, coll packs, fuel injector and had a fuel injector cleaning done on the truck. Programer was set for high mileage, code comes on runs like crap. Changed programer to stock settings, which cleared out the code. A couple days later, code again.


There is no specific time when it comes on.
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Old 02-15-2013, 12:01 AM
tandamad tandamad is offline
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I would say check coil connectors. I had one that was loose and causing an intermittent misfire on my '05 F150 5.4l
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Old 02-15-2013, 09:57 AM
TriciaH01 TriciaH01 is offline
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The code came on again yesterday, went to dealership to run a diagnostic on it, tech stated the underlaying problem was actually the trucks online computer. He stated the 2007's if they were produced between a certain timeline there has been a notice out that the computer needed to be reset to a different factory settings. (the code is due to the truck running at idle for long periods of time)

So far truck is running well.

Thanks for your advice.
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Old 02-15-2013, 09:57 AM
 
 
 
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