2003 Ford 6.0 Hard start below 60f.
Having a hard cold start problem on my 6.0.Starts right up if plugged in below 60deg.With key on. FMP is 47.5 volts IPR is 14.81 ICP is 19 Running IPR is 28.1 ICP is 846 SYC is 1 Any he...
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Do a load test on both batteries. We had one of the two that had shorted cells, and it was dragging the other down with it. It "seemed" to spin pretty fast, at least just from listening to it. But once I put two new interstate batteries in it, it spun faster, and the tech told me that also this would allow for higher FICM voltage while cranking. Fixed our hard start issues.
