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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

fail safe mode

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Old 08-20-2009, 10:53 AM
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Default fail safe mode

I just had a new motor put in my 2004 F150 4x4. The motor is in and the truck will crank but says fail safe mode and runs like crap. Any ideas as to what could be causing this?
Old 08-20-2009, 11:29 AM
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tps or coils/plug. pull the codes. shooting in the dark until you do.



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