Will not crank over

Tiny
CONGLETON
  • MEMBER
  • 1999 FORD F-150
  • V6
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
Purchased this vehicle from private party. They said they had only used it twice, when the starter failed. The positive connection had so much corrosion on it I thought this was the problem. I replaced the end and tried to start it. When I turned the key to crank it, nothing. All my dash lights worked, along with the gauges etc. Nothing from the starter. I jumped across the main posts of the relay on the firewall and the starter cranked over nicely. Nothing with the key, however. Where do I go from here?
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Sunday, May 28th, 2017 AT 12:16 PM

2 Replies

Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
Is "S" wire still hooked to the starter relay/solenoid?

If it has a "S" and an "I" wire for the solenoid, did they maybe get switched?

With "S" wire taken loose, do you get voltage (and what) from the "S" wire's end, when the key is turned to "start"?

I may be able to get you a "Prodemand" wire schematic for the starting system, this would show all of the goodies that could go wrong before the solenoid.

Picture I had on hand for a Ford.

Your Turn,

The Medic
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Sunday, May 28th, 2017 AT 7:15 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,544 POSTS
Hello,

Here is a starter wiring diagram(BELOW) for you and a guide to help you do some testing.

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

Please run this test and get back to us so we can continue helping you.

Cheers, Ken
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Monday, May 29th, 2017 AT 3:30 PM

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