Same with mine.....You might have crossed the pump wires....Go and recheck it....sounds like one lead might have gotten switched I do not think this would be a wiring problem. Unless you wired the flow solenoid wrong directing the fuel to the front tank instead of the fuel rail. Or you may have crossed the hoses on the direction the fuel returns. Allowing the rear to flow into the front.Does the truck run when you try and start it with the back tank on only ? I would think if it does your return hose is on the front tank instead of the rear. If your fuel pump was ok and you happened to replace it. I would check this out; and if it is, replace the directional solenoid. PLEASE note I`m trying from old memories as to how these things work. About a wiring problem check the pump first, then check the solinoid flow divider
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down the right side... starting front to back 1,2,3,4 left side, front to back 5,6,7,8,
from80's to 98 its a 6x8 in front and back
Passenger side, front to back: 1 , 2 , 3 , 4
front or rear? the front is slightly higher and rear of the drain... the back has a cover you remove to drain the fluid and a fill on the front of the diff..
Passenger side, front to back, 1, 2, 3, 4. Drivers side, front to back, 5, 6, 7, 8.
Possible that the rear sensors are broken.
351 5.8 LITRE is 13726548. 1-4 Is front to back on passenger side,5-8 is front to back on driver side. 302 5.0 liter is 15426378. 1-4 is front to back on pass. side and 5-8 is front to back on driver side. Rotor in the cap spins CCW from one.
142536,cylinders looking from front to back, passenger side123 drivers side 456
Owner's manual. on the back of the fusebox cover
front speakers and back speakers are both 6x8 speakers
Look inside your driver side door, there is a tag that tells you GVWR for front and back.
if i am not mistaken the front door speakers are 6 in a half inch and the back speakers are 6x8 inch speakers.