Sounds most likely like a broken wire or bad connection at a plug in connector on your cam sensor wiring harness. Trace the wires from the cam sensor back to the ecm if you can. I would get out the wiring diagram, find the terminal at the ecm connector that the cam sensor signal comes in at, then check for continuity between that terminal & the cam sensor plug. If you have continuity, then you either have another bad cam sensor (not likely, but an outside possibility) or the ecm has a problem.

95 Montero SR
3.8 MIVEC, Advance headers, 2 1/2" exhaust, Magnaflow muffler, OME shocks & rear springs, 2" body lift, 3" tank lift, 4.90s, TRE front locker, factory rear locker, Roger Brown Rock Sliderz, 315/75r16 (35") tires, Sport big brakes