The biggest issue we deal with that causes Failsafe Mode is either an overly lean or overly rich condition. This is the CAI problem with canned tunes that everyone talks about. Outside of that, there isn't much short of an actual failure.
Take care.
__________________
Bill Cohron - The Mad Doctor  
Power Hungry Performance - The ORIGINAL in Ford performance tuning... Since 1997!
(678) 890-1110
www.gopowerhungry.com - Home of the Hydra Chip, Minotaur Tuning Software, and the new Orion Reflash System for Navistar!
Bring back  Windows™ XP and 7. 
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Windows™ 10 is only slightly less annoying! 
Windows™ 11 is garbage! 
Much to my surprise, I'm actually quite enjoying Linux! 
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