prelim on truck,-99 24 short bx, auto 4x4 3. 54 50k/ recieved @45k, soon after wormup oilpres, would stay just above redline on low end . After3-4 miles @160 dg on thermometer oil pres will rise to 50 psi. When shutdown then restart 4-5 min, oil press. reads off the charts. Bad sender...