In a 89 F150 can the DFR be bypassed? And a description of how and what parts would be needed? Thanks
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first understand what you have to work with, two tanks, two pumps, two controlled check valves, a return fuel line, and dash switch. the simplest way would be just drill and tap fittings low side of tanks and install a jump line.for fuel.you'll always be running one pump or the other from the dash switch. you also retain an extra pump if one stops working
There is also a lift pump on the frame rail on this model.