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08 F350, will intermittently hold gears and have high rpms then go into limp mode (3rd gear) tonight it would not shift from 1st gear, then went into limp mode. Tried to turn around and had no reverse, has not done that before. Drove 1/2 mile back home in limp mode, reverse worked when backing into driveway. No transmission codes this time, previously it popped P0722 and P0720. Very intermittent, drives great otherwise. Looking at the speed sensors the connectors are not corroded, have not pin-out tested the harnis yet. Truck is deleted and HS mini max. Trans fluid is full, normal color and smell.
I've gone through the treads and have found various issues but none the same as mine, and none so sparatic. Any help would be appreciated!
 
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