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1990 Jeep Cherokee Question: How do you test a coil ?

 

Question

amadeius6, 4.0L 6 Cylinder, Columbia, PA, May 10, 2009, 06:12
 Rookie

I am not getting any spark ! If it is not a coil what can i look at next ?

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  • Answer #1

    May 27, 2009, 10:38
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     Technician

    You need to check that the coil is getting the proper signal to fire the plugs.

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  • Answer #2

    November 04, 2010, 08:59
     Rookie

    Pull the plug off of the coil and check for 12V on the B+ side of the plug. If not 12V, I would suspect the Engine Control Module which can be reflashed if you get the whole car to the dealer ( 1hr bill time roughly $100) or else I have been told that it could be the Ignition Switch.

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