No Crank and no ideas - Ford Powerstroke Diesel Forum
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Old 02-12-2014, 03:25 PM
Zen Zen is offline
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No Crank and no ideas

Yesterday went to start truck after it had been sitting for two days in 70 degree weather. No go after about 45 minutes of checking over things and figuring how I would get home decided to try it and turned cranked on first key turn. Got home and it will not crank since via the key. If I jumper the starter relay it cranks just fine. If I jump the 12v ignition point on the relay it will turn over as well. Voltage on the ignition wire to starter relay is showing 11.0v when key is in start position. Batteries are showing good and were recently replaced with interstate batts and crank fine when I jumper the relay. Neutral position sensor or whatever it is called was replaced when tracking down an electrical issue earlier this year due to a bad alternator.

Will 11v from the ignition switch not be enough to trip the relay, and should I look at the ignition switch or is something else suspect. No fuses are blown. Does not start when ranging through gear selector, and shift selector bolts are tight under dash.

Not sure what to look at next as I thought that was all there was to the starting system.
Help!
2000 7.3l 2wd stock 210000 miles
No alarm system

Last edited by Zen; 02-12-2014 at 04:35 PM.
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Old 02-12-2014, 06:56 PM
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No check engine light?
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Old 02-12-2014, 08:36 PM
Zen Zen is offline
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no codes or CEL that I have found All electrics function as normal except this, this was literally one day go to crank it and click nothing.
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Old 02-13-2014, 06:18 AM
Zen Zen is offline
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Charged batteries just in case. Getting full 12v from ignition switch to starter relay. About to go check Transmission switch alignment. Can ignition switch put out 12v to relay and still not trigger a cranking condition due to another problem. Starting to think grounding issue, or ignition key as it is pretty well worn in.
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Old 02-13-2014, 06:28 AM
Zen Zen is offline
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Ignition SWITCH! pulled it and cleaned the two silver tab contacts off, and blew out the cylinder hole with air. Starts right up now.
So is there a way to order an ignition switch with the same key so I am not carrying around two different keys if I replace it? Anybody

Last edited by Zen; 02-13-2014 at 06:56 AM.
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Old 05-15-2014, 10:34 AM
Zen Zen is offline
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Not the key ignition switch. worked for a week and then failed permanently. I need help on this one still as I had to wire a button to keep the truck usable, and don't want to leave it like this. Any ideas?
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Old 05-15-2014, 11:09 AM
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Start in the middle, at the starter solenoid on top of the pass side wheel well.

If, when you roll the key to the "crank" position, you do not have the 12v in the Small wire then the problem is on the Key/Nssw side.

If you do, can you feel that solenoid "throw? (it should be obvious)

If not, you should replace it.

If so, the problem is in the starter/cables side (assuming the batteries & connections are OK)
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Old 05-15-2014, 11:28 AM
Zen Zen is offline
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I get 12v to the small wire when rolling the key to the crank position and am able to jump the solenoid manually via the small wire position with 12v with my work around switch, so that is why I am so confused. Solenoid is good and I am getting 12v to it. Starter is good as it starts right up via push button. Transmission position sensor is fairly new from Ford and adjusted properly. Gear lever position does not have any effect on starting or not starting in my case.
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Old 05-15-2014, 11:35 AM
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getting 12V to solenoid but not through it unless you jump it sounds like a bad solenoid to me.
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Old 05-15-2014, 11:40 AM
Zen Zen is offline
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so it jumps from the small 12v connection wire which should mean it is a good solenoid and I have replaced it as well as I had one go out on me before. Still think it is bad even if I can manually jump it from the signal input stud?
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