Ford: fuel pump, ford dealer, new ford

Question
HI Ragu,
  I have a 1993 ford e-250 van. The fuel pump went i replaced it with a new ford oem pump.Drove on and off 2 days on problem then went to start it and the fuel pump didn't Come on i replaced the relay some time it worked some time it didn't. i then replaced the eec relay so far it seems ok.I was also going to replace the eec diode in the power distribution box but no one seems to have it .Ford dealer said if i knew oem# he might be able to help me .Is their any thing else i can check I'm worried i might get stuck on the road or it might not start far from home.Id appreciate any advice thanks.
                         Steve

Answer
sorry it took so long to get back they had a problem with my sign in.The diode wouldn't make a difference i have never had to replace one but i have replace a lot of EEC relays.Just make sure you change the filters .ford put 2 of them on there is one back by the tank and there is one on the frame by the fuel pump.there are 2 pumps which one did you replace?