no spark

Asked by joey57279 Feb 06, 2016 at 03:51 PM about the 1996 GMC Sierra 1500 C1500 SLE Standard Cab SB

Question type: General

I change out motors and wiring harness from 4.3 to 5.7 I'm getting power to the coil and ignition module but not out of the coil

11 Answers
223,845

Rowefast answered 8 years ago

If you have power to the coil, but no spark yet, I would take the coil & the ignition control module off and have it tested at Auto Zone.

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joey57279 answered 8 years ago

Also changed pickup coil in the distributor and crank position sencer checked all grounds

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223,845

Rowefast answered 8 years ago

Everything is working should have spark. Try checking with a spark plug laying on the manifold? Is there spark out of the coil wire itself?

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223,845

Rowefast answered 8 years ago

Well I guess you are going to have to get some things check out. Power to the coil, right, power to the ICM, power goes from that to the coil, so there is power. Before having to test the ICM, coil, and the ECM, maybe check to see if there is power at the coil when cranking/starting position. Maybe has something to do with that circuit. And the distributor...the distributor, is that in wright?

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