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PostPosted: Fri Feb 04, 2022 2:32 pm 
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tattoosteve99 wrote:
I am now getting steady 14.69-14.79 voltage


Too high unless the engine bay (specifically, the voltage regulator) is at subfreezing temperature and the battery is severely discharged. Find the high resistance upstream of your voltage regulator.

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PostPosted: Sat Feb 05, 2022 11:44 am 
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TBI Slant 6

Joined: Sat Jul 08, 2017 2:06 pm
Posts: 123
Location: NC
Car Model: 78’ dodge D100 slant six
SlantSixDan wrote:
tattoosteve99 wrote:
I am now getting steady 14.69-14.79 voltage


Too high unless the engine bay (specifically, the voltage regulator) is at subfreezing temperature and the battery is severely discharged. Find the high resistance upstream of your voltage regulator.


It could have been cold and battery was probably low. Seems to have lowered some now. I will recheck later today. I have an Intermittent problem now. The charging will go completely off momentarily and then go back to normal once warm. I believe this is a ignition switch/ignition wiring problem as it now runs off a relay instead of just wires (as said in the HEI thread, I upgraded like was suggested). There’s a gremlin somewhere and I won’t quit till I find it.


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PostPosted: Sat Feb 05, 2022 11:15 pm 
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TBI Slant 6

Joined: Sat Jul 08, 2017 2:06 pm
Posts: 123
Location: NC
Car Model: 78’ dodge D100 slant six
So with the “fields loads relay” installed basically everything is separate from the rest of the vehicle. Shouldn’t be but a few wires to diagnose right? Two field wires, relay wires, battery wire and a couple grounds. That’s it according to the HEI writeup. How would anything else matter??


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PostPosted: Sun Feb 06, 2022 11:37 am 
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TBI Slant 6

Joined: Sat Jul 08, 2017 2:06 pm
Posts: 123
Location: NC
Car Model: 78’ dodge D100 slant six
Maybe just MAYBE I found something. The green field wire has a crack in the insulation. Swapped the two field wires and taped up the crack for now just to see. As I said this is a intermittent problem that comes and goes. I thought I had checked all the wires and I did with a voltmeter but didn’t physically check them.


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PostPosted: Sun Feb 06, 2022 12:34 pm 
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Turbo EFI

Joined: Sat Feb 18, 2006 2:19 pm
Posts: 1492
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viewtopic.php?f=28&t=65954


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PostPosted: Sun Feb 06, 2022 1:26 pm 
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TBI Slant 6

Joined: Sat Jul 08, 2017 2:06 pm
Posts: 123
Location: NC
Car Model: 78’ dodge D100 slant six
matv91 wrote:
https://www.slantsix.org/forum/viewtopic.php?f=28&t=65954

My short was at the alternator. I don’t have a ammeter as it’s been bypassed and the charging system is basically on its own little circuit. That thread was actually one I have read.


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PostPosted: Mon Feb 28, 2022 5:01 pm 
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TBI Slant 6

Joined: Sat Jul 08, 2017 2:06 pm
Posts: 123
Location: NC
Car Model: 78’ dodge D100 slant six
Short lived yet again :| :( It was fine until today. The voltage dropped down to 12.8-13 volts. When lights are on it just stops. It’s like I’m cursed to fail.


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PostPosted: Mon Feb 28, 2022 9:40 pm 
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TBI Slant 6

Joined: Sat Jul 08, 2017 2:06 pm
Posts: 123
Location: NC
Car Model: 78’ dodge D100 slant six
I hope this is the fix I’ve been looking for. Somehow, in all my haste I guess, there’s only one relay and there should be 2! One for the HEI and one for the alt VR circuit. I guess there has been a high voltage feedback loop to the VR causing my issues. I really hope that’s it as I’m ready to call it quits and just walk! Did I mention that this is my only vehicle and I’m in heart failure? Yeah seems my luck just gets worse and worse huh. So now I’m stuck till I get something to freaking work right. :(


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PostPosted: Tue Mar 01, 2022 4:23 pm 
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TBI Slant 6

Joined: Sat Jul 08, 2017 2:06 pm
Posts: 123
Location: NC
Car Model: 78’ dodge D100 slant six
So I believe this was issue to start with when I did the HEI upgrade. Somehow I guess my brain is off it’s axis. Somehow half the relay was on the HEI and the other half on the VR. Now it has two and I’ve checked with ohm meter to make sure it’s running on the right wires this time. Thanks for everyone’s help and tolerance of my dumb brain! I do appreciate you all taking time and that’s how I found the issue was to go through the whole thread again and re-read/retry everything. Hopefully this solves more issues than just the VR.


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PostPosted: Fri Mar 04, 2022 6:28 pm 
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Turbo EFI

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PostPosted: Fri Mar 04, 2022 6:29 pm 
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Turbo EFI

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PostPosted: Fri Mar 04, 2022 6:32 pm 
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