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Starting issues

Ser# C365L-0145-9475
4G64 engine
Erratic power supply issues to ignition coil, sometimes with key in crank or run position (switch tests ok)Are there any common ignition issues with these trucks?
Must be a relay, diode or box that controls this. Any ideas or wiring schematics would be great.
Thx
  • Posted 20 Feb 2016 00:25
  • By BrewCrew
  • joined 18 Nov'08 - 108 messages
  • Ontario, Canada
We`re here for a good time
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Hello. We had a similar issue. they had a problem with premature failure on starters back in the day.

they resolved the issue with a start relay - little black box 1 x 2 x 3 inch size.

some were installed close to the starter others up under the dash.

Hope this helps
  • Posted 20 Feb 2016 04:35
  • By Prentice
  • joined 25 Jun'08 - 600 messages
  • Ontario, Canada
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