How does the spark come from the ignition to the coil

Gregory Van Allen

Asked by Nov 10, 2015 at 03:42 AM about the 1998 Dodge Ram Van 3 Dr 1500 Cargo Van

Question type: Maintenance & Repair

I have no spark on the coil

2 Answers


There is a 12V supply wire to the coil that is live to energize the coil, the ECM will brake this circuit allowing the energized coil to release the spark to the designated cylinder. You can have the coil tested by a resistance check (ohms╬ę). I am not sure if Auto Zone does this or not but it can be tested.

Tom Harmon

the engine must be turning to get a spark .When you crank an engine it triggers a spark electronically .thats timed to fire the spark plugs

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