Question about 1990 Jeep Wrangler

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No spark on 1990 yj 4.2 L.checked power to coil got power to coil positive side when key on,didi reverse power on the other side of coil also, please help

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  • yvan tessier May 24, 2011

    no didn't replace coil tried more then one that i have on hand not working but the neg at coil should pulse when turning doesn't happen with test light on it,is it module or coil...or...



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Check to make sure coil has proper ground Also ignition switch could be at fault

Posted on May 23, 2011

  • 2 more comments 
  • yvan tessier May 23, 2011

    i got new ignitionnd installed,and one wire at coil is pos and other is neg ?..but read somewher about dwelll signal ?and that second wire is not pulsing like they said in other post in this forum but mine is on once key is turned

  • robertwilk896 May 23, 2011

    dwell is/the rate,measured in degreesof shaft rotation,at whichan electrical circuit cycles on & off(your coil.Did you replace coil ?

  • robertwilk896 May 24, 2011

    yeah the electronic control module tell the coil when to spark,take it out & have the auto parts store check it for you keep posting

  • yvan tessier May 24, 2011

    the ground for coil is what the holder



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