Will not start it just clicks

Tiny
DEAN HIATT
  • MEMBER
  • 2016 FORD F-350
  • 6.7L
  • V8
  • TURBO
  • 4WD
  • AUTOMATIC
  • 127,000 MILES
Tries to crank and then just clicks. Two good batteries but won't start. Alternate and starter both good.
Tuesday, July 27th, 2021 AT 5:38 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi,

If the batteries are good, the connections are clean and tight, and you are getting a click, we need to do some checking.

First, let's confirm that all fuses are good and they are getting power both to them and from them. I attached the entire wiring schematic for the starting system on your truck. In pic 1, I highlighted fuses and the starter relay. In addition to checking the fuses, make sure there is power present to them. Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Pics 3 and 4 show fuse and relay locations. I highlighted them for you.

As far as the relays, if there is a different one having the same part number, switch them to see if it makes a difference. If there isn't one to switch with, here is a link that explains how to test a relay:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Let me know what you find or if you have other questions. Also, if you haven't, check for power at the starter s terminal. Here is a link that explains how to test it:

https://www.2carpros.com/articles/starter-not-working-repair

Take care,

Joe

See pics below.

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Tuesday, July 27th, 2021 AT 9:00 PM

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