Ive put a new fuel pump in this van and I don't have any electrical power back to the tank I'm bumfuzzeled on the wiring harness I've checked at the harness where icy plugs in at the tranny but there is no power from tranny to engine. Any pointers or hints woulbe gladly appreciated

 

Did you just lose power after you installed the new pump? If so, is the fuse blown? Bad FP relay? Did you chase the wire all the way back to the front as far as you can? Trace it back to the FP relay and you will probably find a bad relay or no power to the relay.

 

I am having the same problem on a 94 b250 I am purchasing (63,000 actual miles garage kept sat for 2 years) fuel pump relay is not sending power to fuel pump. ALL wires on relay check hot except for the wire to the pump. That is with switch in run position. center pole 87a is showing to be hot so relay is not transferring power. Changed relay and still no power to fuel pump. IDEAS?