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No Crank No Start issue?

Tiny
MRVING92
  • MEMBER
  • 2008 FORD F-150
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 175,000 MILES
Hello, my truck will not crank and start, I tested and charged the battery, tested the starter, checked the fuses both inside the cab and under the hood. I also checked if the motor was frozen (it was not). Any advice would be greatly appreciated!
Sunday, July 30th, 2023 AT 5:43 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,420 POSTS
Will it crank over in neutral? If so, the gear range sensor is bad, I would swap out the starter relay as well. Here is a guide to help us figure out the problem and I have included the starter wiring diagrams so you can see how the system works and to test to see where it loses power.

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

and

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the images (below). Please let us know what happens.

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Monday, July 31st, 2023 AT 12:59 PM
Tiny
MRVING92
  • MEMBER
  • 2 POSTS
Hi Ken, no it won’t crank in neutral, and I tested the starter relay, and it was good. Thank you for the diagrams. :)
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Monday, July 31st, 2023 AT 7:17 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,420 POSTS
So, is it fixed? If not, check for power at fuse #102 and #101 when the key is in the crank position, this will help us test the ignition switch.
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Tuesday, August 1st, 2023 AT 10:07 AM

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