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Ford Tractors Discussion Forum
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Ignition Switch or What?

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Al in PA

12-05-2003 19:51:33




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Just finished plowing the first wave of snow. When I put my 3000 away, I turned the ignition switch to the off position, but nothing happened: The tractor kept right on running. I turned it on and off a number of times with no luck. When I accidently engaged the starter for a split second and turned it back to off, the tractor shut down normally. Then I was able to start it and shut it down with no problem. Any ideas what would cause this? For what it's worth, I replaced the switch this past spring because of a similar problem last winter - has worked fine up until tonight.

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RWK in WI

12-06-2003 06:40:55




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 Re: Ignition Switch or What? in reply to Al in PA, 12-05-2003 19:51:33  
The key words in your post was "plowing snow". My 3000 have the same problem every so often when moisture freezes on the switch contacts. I usually can get the tractor to stop by shutting the key to OFF, removing the key and then blow my breath on the switch.
Using a hair dryer on low works even better.
The problem is more noticable on the tractors stored in damp places.
I hope this helps you.

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Al in PA

12-06-2003 07:20:16




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 Re: Re: Ignition Switch or What? in reply to RWK in WI, 12-06-2003 06:40:55  
Thanks for your suggestions. I do store the tractor in the barn, but I could have easily gotten moisture in the switch while plowing.



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Al in PA

12-06-2003 06:31:33




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 Re: Ignition Switch or What? in reply to Al in PA, 12-05-2003 19:51:33  
Thanks for your quick responses.
Tom: You're correct about it being a gas engine. I should have mentioned that in my post. I like your kill switch suggestion.
Old: When I first purchased the tractor (2 years ago) I did experience the solenoid sticking on one or two occasions. The starter would not kick out until I tapped on the solenoid. It hasn't done that since the new ignition switch was installed.

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TomG

12-06-2003 04:00:26




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 Re: Ignition Switch or What? in reply to Al in PA, 12-05-2003 19:51:33  
It's a little tough to troubleshoot while the tractor is running and even tougher if it doesn't happen when you want it to.

I guess it's a gas engine and almost by definition, if it keeps running the ignition coil is still powered. The coil primary winding is completed by contacts in the switch (there usually aren't relays in an ignition circuit). Again almost by definition the contacts were shorted but the question of where is more of a problem. I'd guess that the switch wasn't breaking the contacts until something was repositioned when turning it to start, but a short could be almost anywhere in the circuit.

The easiest and cheapest fix might be to install a kill switch in the coil circuit so if the ignition switch doesn't work the kill switch will.

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old

12-05-2003 20:42:57




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 Re: Ignition Switch or What? in reply to Al in PA, 12-05-2003 19:51:33  
It could be the solinoid sticking. and when you hit the starter button it popped it loose



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