1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

67 f100 electronic ignition ?

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Old 04-21-2013, 05:50 PM
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67 f100 electronic ignition ?

i just replaced mi points with the accel 2020 electronic ignition kit. the truck wasnt running before but it was a point issue. now that i have the elec. ig. installed it will only fire when i disingage the starter. no fire until i let go of the switch.
any help would be great. Thanks
 
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Old 04-21-2013, 06:59 PM
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must be the ignition switch............
 
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Old 04-21-2013, 09:54 PM
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See if you have spark at the plug while someone turn it over while your grounding it if it does look and see if it a good blue spark or week orange/yellow spark. Also in some of the wiring diagrams there. Happens to be 2 wires one of them was a Pink wire it had a resistor in line on it that when you go to a electronic ignition you tossed that resistor. BUT on my 68 I could never find that Pink wire and I tossed the point system for a DURAspark system So it sounds like your getting half the voltage you need for start then once you get it turning over go you let go of the key and it still has the momentum the switch comes back to run and shoots the full voltage and starts up.


Originally Posted by wood0691
i just replaced mi points with the accel 2020 electronic ignition kit. the truck wasnt running before but it was a point issue. now that i have the elec. ig. installed it will only fire when i disingage the starter. no fire until i let go of the switch.
any help would be great. Thanks
 
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Old 04-22-2013, 09:45 AM
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id also say the ignition switch, or a wiring problem.

i was considering using the 2020 kit on my truck so i want to know how this turns out....
 
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Old 04-22-2013, 12:23 PM
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From the factory there were two paths Ford sent power to the coil. 1st path was full 12V during cranking the starter. 2nd was after the egine started cutting voltage down to 6 to 8 volts to make points last longer. It sounds like you disconnected the 1st path.
 
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Old 04-22-2013, 12:38 PM
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Originally Posted by JEFFFAFA
From the factory there were two paths Ford sent power to the coil. 1st path was full 12V during cranking the starter. 2nd was after the egine started cutting voltage down to 6 to 8 volts to make points last longer. It sounds like you disconnected the 1st path.
I didn't disconnect anything but points. It's a simple kit too install
 
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Old 04-22-2013, 05:45 PM
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OKAY, wasnt the ignition switch..........

I have no idea where this so called resistor is at... i cant find it....
does anybody know where to look? and what it looks like??

i do not have fire with the switch in start position until i let it go back to the run position for a split second.
 
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Old 04-22-2013, 06:20 PM
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Try checking the starter solenoid. I'll check my wiring schematics when I get home. I believe when the ignition switch is turned to "start" it sends 12v to the solenoid at the "s" terminal. When this happens the solenoid sends power to the starter AND sends the 12v to the coils via the "I" terminal.
 
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Old 04-22-2013, 06:24 PM
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Sorry. coil not coils.
 
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Old 04-22-2013, 06:37 PM
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Originally Posted by JEFFFAFA
Try checking the starter solenoid. I'll check my wiring schematics when I get home. I believe when the ignition switch is turned to "start" it sends 12v to the solenoid at the "s" terminal. When this happens the solenoid sends power to the starter AND sends the 12v to the coils via the "I" terminal.

ill give it a shot soon as i get another person available to trun the switch for me. thanks for the info.

this is driving me crazy
 
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Old 04-22-2013, 07:29 PM
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FOUND THE LONG PINK RESISTOR WIRE!!!!!!!!!!YAY YAY YAY YAY

Not sure cutting it out tho...... do i just cut it out and reconnect the ends i cut??? there is a red and yellow from the ignition switch that connects to the resistor wire and connects to the red wire that goes to the coil +
 
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Old 04-22-2013, 07:45 PM
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That resistance is where the coil get 6- 8 volts during"run". Not "start". I have read other guys trucks weren't right untill they gave the module 12v. So I would cut it and by-pass it. But leave it there.
 
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Old 04-22-2013, 07:52 PM
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Originally Posted by JEFFFAFA
That resistance is where the coil get 6- 8 volts during"run". Not "start". I have read other guys trucks weren't right untill they gave the module 12v. So I would cut it and by-pass it. But leave it there.

OK, i think im following you now. ill check my voltage at the selonoid tomorrow. i quit for today.
 
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Old 04-23-2013, 04:45 PM
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I still have the factory voltage regulator hooked up (i didnt mess with it at all) could my problem be there?

I 12.86 volts at the battery, but only 9.8 to 10 volts at the coil with switch in run position.

I dont have another set of hands to help right now, im just thinking.
 
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Old 04-23-2013, 05:03 PM
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Not voltage regulator. That would be possible only if the engine was running spinning the alternator. I hope someone else chimes in here that knows more than me but I think it is alright. I am thinking the 2 volts your truck lost there is just parasitic loss. Power going around the Grand Canyon before reaching the coil. With only the battery to push it and no alternator back-up. I wouldn't worry about it until that Bad Boy is running and then there is only 9 - 10 at the coil.
 


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