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Just jacked up the truck and checked the wheels, they do go the same direction when in Neutral, but in Parking with the little bit of play, wheels rotate different directions.


Then you're not locked. I Bet you've jacked up that indicator somehow, and the 4wd ECU THINK's it is locked, and inhibiting some functions. Unplug the indicator, and see how the truck behaves.

If the pump ran forever before you messed with it then the diaphragm was likely leaking, and fooling with the indicator won't help that issue any.

87 Raider 4D56td v5MT1
31's..Basically Stock