I swear Ford has programmed this truck to have problems after 100,000 miles. 2016 f150 3.5 EcoBoost. Had the battery, starter, and alternator checked. All passed. The battery is about two years old, alternator original, starter brand new. Something's going on where the truck now wants to barely start and all the gauges stay at zero and they bounce like crazy until the truck is warmed up for a second or two. I need the cause and fix immediately. Leaving Blue Ridge GA right now.

After the initial hard start the truck starts fine after that no problems no gauges bouncing nothing. It did it cold this morning. And it did it warm yesterday afternoon at 12:00 after the truck was driven.....

 

I would start by checking the grounds and ground cables.

 

If the Battery voltage were checked while cranking, bet you would see it way below 10 volts.
Too much high resistance and voltage drop across a bad connection.
Even the rest of the truck can't work on such low voltage. >>(dash) even shows it.
Good luck.

 

Replace the Battery.

 

Sounds like the battery. Start with the connections, and then the battery.

 

Low voltage. Check connetions and battery. It's not impossible that your 2 year old battery has gone bad.

 

Everyone thank you. We were able to make it home yesterday to Florida. Went straight to the store picked out a new battery, and everything is good this morning. No gauges erratically bouncing, fired right up. Heck yeah. I appreciate this group thank you. Have a great day.