Join Date: Oct 2013
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You probably have a vacuum leak at the hubs. Just pull off the vacuum line going to the hubs and plug it on the pump side. You just have to lock the hubs manually.
I know the water gauges are accurate because mine was reading a little low. I bought the truck last summer and everything was fine. In the fall when the temperature was getting cooler, my truck would barely even touch the bottom of the normal range. I figured the previous owner had removed to thermostat. I bought a 190 degree one at Napa and installed it. There was a thermostat in there and it seemed like it was in good shape. Previous owner did a lot of towing , so probably put in a lower temp one. After I installed the new one, gauge reads well into normal range after warming up
1996 F250, 7.3L, auto trans, 4x4, eclb, TS Performance 6 position chip