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Odd 4x4 problem

531 views 0 replies 1 participant last post by  Eric2004 
#1 ·
I have a 2004 F-250 with ESOTF and auto hubs, seems its having an odd bit of problems with its 4x4 system, the vacuum pump operations, 4x4 low works fine, but when engaged into 4x4 high the light comes on but nothing else happens, rear wheels spin when accelerating in mud but not front wheels, so im assuming the 4x4 high is not operating...Is it at all possible for 4x4 low to work but not high?
 
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