Thread: 2006 5.4L Intermittent Dead Miss
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Old Wed, February 23rd, 2011, 09:24 PM
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Join Date: May 2009
Location: Anaheim, Calif.
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welcome to the club. 08 Screw 5.4L same issue. Only 17 thousand miles so it isn't plugs or dirty intake. Gryphon works fine on canned tunes, its the custom 87 tow tune that causes my isue.
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