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central wisconsin | Had several issues thru the years that caused that. Corrosion in the battery box on the ecm fuse holders is fairly common. The last one was a 2001 that did that. It had 2 relays on the center of the firewall just above the valve cover. These relays supply power to the ecm. As the truck gets older the female spade terminals loose some of their tension on the spades of the relay. When the engine won't start open the battery box and wiggle the fuse connectors on the front side of the battery. If that don't work open the hood and wiggle the harnesses going into the 2 power relay. I would guess that it is the ecm fuse holders in the battery box and by hooking up the battery chargers you are wiggling the wires so that it makes contact. If you take it to a shop and they can't duplicate the problem they arejust going to throw parts at it hoping to get lucky. | |
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Need help with an IH 4700 with a 466E
