Coil

Tiny
MEVANS12313
  • MEMBER
  • 1991 DODGE TRUCK
  • 5.2L
  • V8
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
How u tell if coil is bad
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Sunday, January 24th, 2016 AT 6:56 PM

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Tiny
ASEMASTER6371
  • EXPERT
With the key on, verify power to the positive side of the coil. If you have power, check the negative side. There should be power there as well. With a test light, crank the engine and probe the negative side of the coil. The test light should flash. If it does, and there is no spark, then the coil is bad. If the light does not flash, the coil is not being triggered to fire

Roy
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Monday, January 25th, 2016 AT 7:01 AM

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