I have to hold key in start position for truck to stay running?

1986 FORD F-350
143,000 MILES • V8 • 4WD • AUTOMATIC
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MACRI670
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  • 1 POST
I have to hold key in start position for truck to stay running. It has a new ignition switch, solenoid, and starter .
Dec 6, 2007 at 3:44 PM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
It sounds like the switch is out of adjustment...
Dec 6, 2007 at 3:57 PM
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STRAILER
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  • ASE Certified Mechanic
You have a problem with the wiring at the ignition switch,the red/green wire must be broken, or the ignition module needs to be replaced, here is the ignition switch wiring diagrams so you can see what I am talking about and the location of the ignition module so you can swap it out. This guide can help test the wiring.

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

Check out the images (below). Let us know how it goes




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Jul 6, 2024 at 4:52 PM
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