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1972 dodge dart 318 electronic ignition

  • cheryl hartkorn
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8 years 11 months ago #2835 by cheryl hartkorn
1972 dodge dart 318 electronic ignition was created by cheryl hartkorn
it seems to be losing spark has a 5 pin ecu mounted on the firewall. what is the ballast resistor for? also any troubleshooting steps. you guys used back in the day

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  • Noah
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8 years 11 months ago - 8 years 11 months ago #2836 by Noah
Replied by Noah on topic 1972 dodge dart 318 electronic ignition
I never actually worked on one, but all the old school guys I know go right after the ballast resistor when those old Chryslers loose spark (with great success I might add).
I'm NOT advocating parts changing here, but I've only ever seen people change them. Whenever I ask why, the only answer I get is always "because it doesn't spark!".
I hope SOMEONE here has some practical advice, because I've always wondered how the system works. Can't be that complex.
They all think it's weird I only know about fuel injection cars lol! Those carbureted dinosaurs were already extinct by the time I got into cars...

EDIT: Just found this
www.hotrod.com/articles/mopp-1110-ballas...e-ballast-blast-off/

"Ground cannot be checked with a 10mm socket"
Last edit: 8 years 11 months ago by Noah.

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  • cheryl hartkorn
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8 years 11 months ago #2837 by cheryl hartkorn
Replied by cheryl hartkorn on topic 1972 dodge dart 318 electronic ignition
it looks like it has a reluctor wheel inside the distributor that passes a pickup coil. wonder if I scope those wires itd be a square waveform on the scope??

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8 years 11 months ago #2838 by cheryl hartkorn
Replied by cheryl hartkorn on topic 1972 dodge dart 318 electronic ignition
take that back itd be a sine wave?? only being 2 wires

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