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Power Strokes
6.0 Tech
ficm Test Help
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[QUOTE="morepower02, post: 845174, member: 237"] The first cold mornings of the year and my truck cranks then fires and dies. If i do this enough finally it will fire often enough to keep running. This summer my original batteries gave out and i am afraid they may have damaged the ficm. I test key on 46-47 volts warm. running 36-to 45 volts warm. I have not tested cold or while cranking. I also shorted the test lead on the case and killed the engine while testing. The truck started right up and i retested the ficm with the same results. Would the warm numbers while running be even worse if i let it sit and checked cold? Is this thing more than likely shot. It runs fine once started, starts fine warm but after it sits over night under 15 degrees it takes for ever to start. Since new it has never gave me a problem in the winter. I wonder if the bad batteries did it in this summer?:shrug: [/QUOTE]
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