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I have an 01 superduty p/u with a 7.3. The #19 fuse in the underhood fuse box keeps blowing. The owners manual says this fuse is for the fuel pump motor and PCM. I changed the fuel pump thinking this was the problem but the fuse still keeps blowing from time to time. Is the fuel heater element on this same circuit? The truck runs fine until the fuse blows. Any help would be greatly appreciated. Thanks Dave.:icon_ford: