Engine won't turn over when I turn the key?

Tiny
COLLINKAIN
  • MEMBER
  • 2003 FORD F-350
  • 6.0L
  • V8
  • TURBO
  • 4WD
  • AUTOMATIC
  • 280,000 MILES
The engine on my pickup won't turn over when I turn the key to the start position. I can hear the starter engage and can hear another clicking sound, which I think could be the injector drive module relay, but the engine won't turn over. I have tested both batteries and they hold 13.9 volts each. I'm not sure how to continue troubleshooting. Fuel system or ignition system?
Friday, February 13th, 2026 AT 12:28 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 55,302 POSTS
It sounds like you have a bad starter which is easy to test, use a test light to check for power at the starter trigger wire on the solenoid, (small wire) when the key is in the crank position, you might want to try cranking the engine over while the gear shifter is in neutral as well. Please go over this video which can help as well.

https://www.youtube.com/watch?v=6YRW8fyNudY

Please upload a short video in your response of the problem, so I can see what's going on. Ken
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Saturday, February 14th, 2026 AT 8:48 AM
Tiny
COLLINKAIN
  • MEMBER
  • 2 POSTS
Thanks for the Info, I replaced the Starter and issue resolved. Thanks
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Monday, February 16th, 2026 AT 6:43 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 55,302 POSTS
Thanks for letting us know, we are here to help, please use 2CarPros anytime.
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Monday, February 16th, 2026 AT 8:29 AM

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