Cold start issue n14 cummins

Yes, last time it was super cold, I had the same problem. Went to home depot, rented a portable generator, plugged in to block heater, waited an hour and then it started right away.

 

How old are your batteries?

 

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Heat can indicate 2 things. A single hot spot on a cable or connection indicates resistance at that point (ie poor connection). If the cables are hot over their entire length (and I mean hot, not just a little warm to the touch), I would check your starter current draw. If the starter windings have an internal short, the starter has less cranking power and will draw more amps. Could be that the starter is going and you are only noticing it during the cold because of how much more power is required to turn over a cold engine.

 

That would be my guess also is that the starter is getting weak and when it gets to be cold out it is having a harder time. Make sure all your connections are clean and tight, I know that will heat up wires if they are not connected properly.

 

Third on starter being weak or bad connections. If starter is old replace it. It will make a huge difference.

 

Below freezing plug it in