Ford startup problems

Tiny
DAN TELARICO
  • MEMBER
  • 1986 FORD F-350
  • 7.5L
  • V8
  • 2WD
  • AUTOMATIC
  • 30,000 MILES
Sometimes it fires, so I changed coil, pickup coil, ECM has power coming off it. Checked and cleaned EGR.
problem did not go away. When it does fire it runs good for a few seconds then starts running rough. (Help)
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Sunday, June 25th, 2017 AT 8:56 PM

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Tiny
HMAC300
  • MECHANIC
  • 48,606 POSTS
I am assuming that you have no spark. Check items in picture both should have at least 90% of battery voltage. If none at module then it may be a bad ignition switch. See pictures module may be bad. Also, never disconnect cylinders number one or eight while testing or running.
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Monday, June 26th, 2017 AT 7:27 AM

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