[njk53]

Trace your fuel pump wires in the harness. A friend of mine had an issue with the wire harness being pinched at body drop at the assembly plant. The fuel pump wire got chaffed and would ground out when conditions were right. His problem was intermittent like yours. He took it to the dealer once and they couldn't find anything. The second time it happened, Ford had a bulletin out on it. Call the dealer and find out from them, they will tell you what models were affected.