Starting problems

[F350Cummins]

As said before Check batteries and Alternator. I had this issue on a 15 charger, push start. Almost identical issue, when warm it was fine when cold it was temperamental. I seem to recall a poor connection in the starting circuit, or a relay. Not sure I kept notes on it as it was not my car. Batteries are the easy place to start, and go from there to following the problem to the starter. I would doubt the button is the issue, but that goes through the ECU to do a safety check prior to starting. If batteries are the issue I would replace any fuse for the starting circuit, check all relays, and all connections. I have seen a poor connection work when there is more battery behind it. fuses are cheap and not always clear to see

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[david3gen]

All good advice here. Double check the CCA on the batteries. Depending who put them in or advised what to buy they may be undersized.

if it works while being jumped it’s getting more voltage at that time while hooked up. Next suspect would be alternator for me. Check connections to make sure they are clean on alternator and on batteries!

X2


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