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94 GMC vandura 5.7

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New User

Jan 4, 2017, 6:59 AM

Post #1 of 3 (298 views)
94 GMC vandura 5.7 Sign In

truck was sputtering, next day crank no start, no spark, got 12v @ coil lead, got probe light flash @ white wire coil lead ( icm good, changed coil
now coil is sparking, arcing from post to body of coil

Veteran / Moderator
nickwarner profile image

Jan 4, 2017, 7:50 AM

Post #2 of 3 (276 views)
Re: 94 GMC vandura 5.7 Sign In

Okay, you had a no spark situation and now you have spark. So what is the question you are asking?

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 4, 2017, 8:22 AM

Post #3 of 3 (270 views)
Re: 94 GMC vandura 5.7 Sign In

If you are saying the coil is arcing from the tower to the body, then you would have a cracked coil.


We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

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