Compression Ignition Addict
Join Date: Oct 2011
Location: Chico, California
Thanked 238 Times in 229 Posts
Mentioned: 8 Post(s)
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The hubs are ESOF or electronic switch on the fly. They should say lock on them and have arrows indicating position as well. over time the vacuum lines going to the hubs rot and you no longer have switch on the fly. at that point you have to get out and lock them manually.
this happened to me in the snow at 1 in the morning wasnt fun considering one of the hubs was frozen.
i since switched to warn manual hubs and capped the vacc lines
works like a charm now
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99.5 f250 7.3 4x4 260k FF 160/30, PHP Hydra, S&B CAI, 4" Exhaust, RR Billet Wheel, Autometer Gauges, Transgo, Non-Ebpv Pedestal, High Flow Outlet, 08 Tow Mirrors.
Dad-2000 7.3 4x4 110k miles, Autometer Gauges, Superchips 1705, 6637, 4" Exhaust, BD Billet Wheel, TruCool Max