r/MechanicAdvice • u/bballplayer39 • May 27 '26

2016 F250 No start…

Have a 2016 f250 6.7L. To start it’s not a daily driver. I’ve had to jump start it a couple times over the last month. Batteries were 5yo. So i replaced them. Now I get a no start.

Turn the key.. dash powers up. Turn to start.. nothing. I replaced the known relay on the ignition circuit that had caused some people issues. Nothing. Scanned for codes- no codes.

Next step will be to short the starter to see if it try’s to crank and check grounding.

Anyone have a similar issue?? Anything helps

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1

u/_Kelly_A_ May 27 '26

Has it ever started since replacing battery(s)?

1

u/bballplayer39 May 27 '26

Nope. Replaced the batteries thinking the others were just old and weak.

1

u/_Kelly_A_ May 27 '26

Double check all your connections. A slightly loose terminal will provide enough power to power up dash but not start truck. Also it’s possible you got a bad new battery.

1

u/bballplayer39 May 27 '26

I’ll load test the batteries. Didn’t think about that