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Ignition trouble

Tiny
DIGSCHOPPER
  • MEMBER
  • 1977 DODGE
  • V8
  • 4WD
  • AUTOMATIC
  • 55,000 MILES
We have a 1977 m880 dodge military pickup. When I turn the key, it starts immediately, but once the key is released, it dies. I'm thinking the ballast resistor is shot. Your thoughts?
Friday, July 15th, 2011 AT 5:17 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,741 POSTS
Resistor was a real common problem. It is bypassed by the ignition switch during cranking to boost the lower battery voltage up while the starter is drawing it down. Check for voltage on both sides of it with the ignition switch in the "run" position. If voltage is missing on one side, replace it.
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Friday, July 15th, 2011 AT 5:57 PM

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