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Starter doesn't turn over

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Old Feb 23, 2007 | 04:11 PM
  #1  
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Starter doesn't turn over

Hi,
We've got a '74 F100 with a 360 that worked fine until it was taken into the hills for some 4 wheelin. Now, the starter won't even turn over. The lights, stereo, and other accessories still function normally.
The starter, solenoid, starter relay, and ignition switch were replaced; still, no action when we take the key to start. If we bypass the relay, and take the wire from the starter directly to the battery, the starter engages and the engine turns over.
I'm pretty stumped. If anyone has any ideas or wiring diagram pictures that I could study, I would greatly appreciate it. Seems to me to be a bad wire somewhere, but I'm not overly familiar with Fords...
Thanks guys!
Steve
 
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Old Feb 23, 2007 | 04:32 PM
  #2  
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tjc transport
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either the wires are pulled off, or the neutral saftery switch/clutch interupter switch is bad.
 
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Old Feb 23, 2007 | 04:38 PM
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What happens if you run a wire from the battery + Post to the S terminal of the solenoid ?

will it turn over ?
 
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Old Feb 25, 2007 | 10:10 AM
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From: Eastern Washington
Thanks for the quick responses guys!

Mil1ion: the truck is at my buddys house, so I'll let you know what happens when we run that wire. He should be able to get to it today or tomorrow.

The neutral safety switch makes sense for my symptoms. I don't know why I didn't think of that myself... I guess its easy to get wrapped up in it when its your problem!
Again, thanks a lot guys. Let me do a bit more troubleshooting, and I'll post back with results.

Steve
 
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Old Feb 25, 2007 | 10:22 AM
  #5  
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C6 .. 1967 thru 1977 F100/350: C7TZ-7A247-A .. Neutral Safety Switch (Motorcraft SW 600)
 

Last edited by NumberDummy; Feb 25, 2007 at 10:26 AM.
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Old Feb 25, 2007 | 11:23 AM
  #6  
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Sometimes wiggling the gearshift can help.

Also if the NSS is the problem one can use a jumper wire to bypass the switch until it gets replaced.
 
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Old Feb 25, 2007 | 10:15 PM
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Only an automatic should have a neutral safety switch. These old trucks did not have clutch safety switches. We used to move one a very short distance occasionally using the starter motor.

A bad cable is often the culprit with your symptoms.
 

Last edited by Torque1st; Feb 25, 2007 at 10:20 PM.
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