Question about 1988 Ford F 150

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I have a 1988 F150 with a 5.0 4x4 duel tank, now heres my problem, i have no fuel pressure at all, i replaced my fuel pump that is on the fram rail and both fuel filters, and my fuel pump relay, im going to buy a eec relay tommorro but i would like to know how to bypass the eec power so that i can put power strait to my pump and then ill know its the eec relay cause it holds the power for the fp relay, but i dont have a book at all with no diagrams i just bought this truck 4 days ago and it sat for 6 months before i bought it. It ran fine then it just started running crappy and dying and then now it wont even start like i said i checked my shreader relief valve on the fuel rail but got no fuel even after trying to purge the system so can you please help me?

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You should hear the fuel pump by turning on ignition, for about 4 sec. sounds like the pickup sock is stopped up inside your fuel tank. seen it many times ... You can bypass eec at relay notice relay holder has only 4 wires leading to it , two large, and two small .. the two small are switch to ground .two large are to relay, one of these large wires is hot all the time( check that) other large wire goes to the pump.. connect two large wires (by jumping wire) together. you have now jumped complete relay system

Posted on Mar 21, 2011

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It may have a automatic fuel shutoff switch on it

Posted on Mar 21, 2011

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