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07 f150 5.4 bucks under load no codes

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Old 08-15-2010, 11:25 PM
karl559 karl559 is offline
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07 f150 5.4 bucks under load no codes

2007 f150 with 95k bucks under load at 1200 -1300 rpm at speed. the idle is flat and smooth and all other running conditions also good. It appears to happen mostly in overdrive when the load is increased at 1500 and above it never happens. I would guess its an ignition problems but there are no codes.
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Old 08-16-2010, 12:13 AM
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mtnlovrs mtnlovrs is offline
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Please see 5.4 Misfire, word from the dealer. I think your problem has been answered in this thread. Good luck.
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