I have a 2000 F-350 7.3psd 4x4 auto. Yesterday I flipped my 4x4 switch and noticed it wasn't working. I looked under the truck and saw that one of the electrical connections(on the drivers side of the transfer case) wasn't locked. I locked it and started the truck up and it all worked like it should. I drove it all day today then tried to put in four wheel and it wouldn't work again. I got under the truck and looked and the connector and it was still locked and tight. I wiggled it a bit and tried it and it still didn't work. I turned the truck off then back on and it magically worked again. Turned it off and on again and it wouldn't work again, tried that 3 or 4 more times and it wouldn't work any of these times. I took the connector off and sprayed it with some wd40 and still no luck. What do you guys think the problem and solution is?
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