No Crank No Start issue?

2008 FORD F-150

175,000 MILES • 5.4L • V8 • 4WD • AUTOMATIC

MRVING92

MEMBER
2 POSTS

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!

Jul 30, 2023 at 10:43 AM

STRAILER

✓Experienced Mechanic
55,249 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.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
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Jul 31, 2023 at 5:59 AM

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. :)

Jul 31, 2023 at 12:17 PM

STRAILER

✓Experienced Mechanic
55,249 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.

Aug 1, 2023 at 3:07 AM

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