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Re: replacing solenoid on 12v 8n

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Author  [Modern View]

07-08-2013 05:49:29

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the 4 posts solenoids on the 01 series are isolated coil and work fine with the thumb tranny switches.

key on provides power to the coil, thumb button grounds it.

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36 coupe

07-08-2013 15:31:34

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 Re: replacing solenoid on 12v 8n in reply to soundguy, 07-08-2013 05:49:29  
This is a good system because it keeps kids from playing with the starter button.My f150 has a diode across the coil to keep voltage spikes out of the computer.

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07-09-2013 06:17:32

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 Re: replacing solenoid on 12v 8n in reply to 36 coupe, 07-08-2013 15:31:34  
i used to get intot he habit of putting diode protection across all the lil relays and such that i had on vehicles back when ECU electronics were a lil less robust.

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07-08-2013 06:16:36

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 Re: replacing solenoid on 12v 8n in reply to soundguy, 07-08-2013 05:49:29  
Quoting Removed, click Modern View to seeIn response to 36coupe, it is as sounDguy says........but the problem arises when the 4 post unit is NOT an isolated coil type solenoid AND this happes more often than not, because so many cars/trucks used a non-isolated coil unit with the 4th post being utilized to power the ignition coil during start-up. So this latter unit, being so very common, is what the counter jockey hands you at the auto parts house when you ask for a 4 terminal solenoid. Look same, marked same "S" &"I", but not right for a 'starter safety' interlocked tractor.

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